Ph.Doctor Beauty Blog

It is rarely genetics that decides how old your skin looks. It is usually the sun. A widely cited 2013 study by Flament and colleagues, which examined facial signs of aging in nearly 300 women, quantified the contribution of sun exposure to visible facial aging at approximately 80% on average [1]. Wrinkles, dark spots, loss of firmness, rough texture — most of it is the cumulative work of UV radiation, and most of it is preventable. That makes photoprotection — sometimes called sun protection — one of the best-supported steps in any skincare routine. This article is a practical, dermatology-led guide to what photoprotection actually is, how UV radiation damages your skin, and how to use SPF in a way that genuinely works. Every concrete claim is sourced to a peer-reviewed study or official body, listed at the end. Key takeaways About 80% of visible facial aging is caused by UV radiation — and is preventable. UVA (95% of UV reaching skin) ages — UVB (5%) burns. Both matter; both need broad-spectrum protection. SPF 30 blocks ~97% of UVB; SPF 50 blocks ~98%. The real-world difference favours SPF 50 because most people underapply. For full face protection, apply a 2-finger-length dose 15–30 minutes before sun exposure; reapply every 2 hours outdoors. Daily SPF is for every season — UVA passes through glass and snow reflects up to 80% of UV. Pair SPF with a vitamin C serum in the morning for the strongest combined defence. What photoprotection actually means Photoprotection is the umbrella term for everything we do to shield the skin from harmful effects of light, particularly ultraviolet (UV) radiation. The word itself is rooted in medical terminology — Greek phos (light) and Latin protectio (protection) — and it covers far more than just applying sunscreen. A useful way to think about it is as three overlapping layers of defence, each addressing what the others cannot. The first layer is behavioural: limiting time in direct sun during peak UV hours (roughly 10 a.m. to 4 p.m. in summer), seeking shade, and being aware of high-exposure environments like beaches, snow, and high altitudes. The second is physical: clothing that blocks UV, wide-brimmed hats, and sunglasses with UV-rated lenses to protect the delicate periorbital skin and the eyes themselves. The third is topical: dermocosmetics with UVA and UVB filters — what most people call sunscreen or SPF cream. It is worth understanding that no single layer is enough on its own. A high-SPF cream cannot fully compensate for two hours of midday sun on a glacier, and a hat alone will not prevent UVA from reaching the rest of your skin. The most effective photoprotection is the boring kind: small, consistent habits applied every day rather than dramatic interventions applied occasionally. Photoprotection is what you do every day, not only on holiday. How UV radiation damages skin Of the solar radiation that reaches the Earth's surface, ultraviolet light makes up only about 5% [2] — yet this small fraction is responsible for almost all the chronic damage we associate with the sun. UV is divided into three bands: UVC, which is almost entirely absorbed by the ozone layer and rarely reaches us; UVB, which causes sunburn and contributes to skin cancer; and UVA, which is largely responsible for long-term aging. Understanding the difference between UVA and UVB matters, because they damage the skin in completely different ways and require slightly different defences. UVA — the silent ager According to the World Health Organization, UVA makes up approximately 95% of the UV radiation that reaches the Earth's surface [3]. It is long-wave radiation, which means it penetrates deeply — past the epidermis, into the dermis, where collagen and elastin fibres sit. You do not feel UVA. It does not burn you. There is no immediate signal that anything is happening. But over the course of years, it degrades the structural proteins of the skin, drives the formation of pigmented spots, and quietly accumulates DNA damage that increases the long-term risk of skin cancer. Three properties of UVA make it particularly insidious. First, it is present all year round, with relatively small seasonal variation — winter does not switch it off. Second, it passes through window glass, which means it reaches you while you are driving, sitting at an office window, or working from home next to natural light. Third, because there is no visible warning, most people significantly underestimate their cumulative exposure. A good broad-spectrum sunscreen — clearly marked as protecting against UVA, ideally with a high PA rating or the European UVA-in-a-circle logo — addresses all three. UVB — the burner UVB accounts for about 5% of the UV that reaches us [4], but it has powerful, immediate effects on the skin. It is shorter-wavelength radiation, doesn't penetrate as deeply as UVA, and is the primary cause of sunburn — that red, hot, painful inflammation that appears a few hours after too much exposure. Tanning, often celebrated as a healthy glow, is actually the skin's defensive response to UVB damage: melanocytes produce more pigment to shield the deeper layers from further harm. UVB intensity varies sharply with season, time of day, latitude, and altitude. It is strongest in summer, around midday, closer to the equator, and at higher elevations — which is why an hour of skiing in the Alps can burn you as quickly as an hour on a Mediterranean beach. The SPF number on your sunscreen primarily measures protection against UVB, which is why a sunscreen labelled SPF 50 is not necessarily giving you equivalent UVA protection unless it is explicitly broad-spectrum. Photoaging — what is actually happening in your skin Photoaging is the dermatological term for the cumulative damage UV radiation causes to skin over time. It is distinct from chronological aging — the kind that happens naturally as you get older — and it is responsible for the majority of what most people think of as "aging skin." Dermatology research frames UV radiation as the dominant external driver of skin aging, alongside other "exposome" factors such as pollution, smoking and sleep quality [2]. The reason this distinction matters is that chronological aging is, for now, largely inevitable; photoaging is largely preventable. At a biological level, UV radiation triggers the formation of free radicals — unstable molecules with unpaired electrons that damage everything they touch: cell membranes, mitochondria, DNA strands, and the collagen and elastin proteins that give skin its structure. Your skin has its own antioxidant defences, but they are quickly overwhelmed by even moderate UV exposure. Free radical damage activates enzymes called matrix metalloproteinases (MMPs), which break down collagen faster than the skin can rebuild it [5]. Over years, the cumulative effect is a net loss of structural protein. The skin literally has less scaffolding holding it up. The visible signs of photoaging develop gradually and tend to appear together. Fine lines deepen into wrinkles, particularly around the eyes, forehead, and mouth. Pigmentation becomes uneven, with sun-induced spots called solar lentigines — sometimes informally referred to as age spots — appearing on the face, hands, neck, and chest. The skin loses elasticity and starts to feel thicker and rougher to the touch. Capillaries dilate and become visible, especially in those prone to rosacea. In more advanced cases, solar elastosis develops: a yellowish, leathery thickening of the skin caused by degraded elastin fibres clumping together, most often seen on the back of the neck and forearms in people with decades of outdoor exposure. The optimistic part of this picture is that prevention works extraordinarily well, and the strongest evidence for it comes from a randomized controlled trial conducted in Nambour, Australia. Hughes and colleagues followed 903 adults under 55 for 4.5 years, randomly assigned to either daily broad-spectrum sunscreen use or discretionary use. The daily-use group showed 24% less photoaging — measured by skin-surface microtopography — than the discretionary-use group [6]. Combine daily sunscreen with a topical antioxidant — a stable form of vitamin C is the most studied — and at night a retinoid, and you have one of the most consistently studied combinations of dermatology-recommended ingredients available. How to use SPF correctly — and why most people don't The uncomfortable truth about sunscreen is that the SPF number on the bottle is calculated under standardised laboratory conditions — using a specific dose of product applied evenly to a specific area of skin. In practice, almost nobody applies sunscreen the way the SPF test measures it. A 2014 review by Petersen and Wulf summarised the literature on real-world use: under natural conditions, people apply between 0.39 and 1.0 mg/cm² — roughly 20–50% of the standard test dose [7]. That means an SPF 50 cream, used at half-dose, may give you protection closer to SPF 15. The cream is doing what it promises; the application is not. The recommended dose for SPF testing, set by both the ISO standard 24444:2019 and the US FDA, is 2 mg/cm² of skin [8]. For an adult face and neck this works out to roughly 1.2 to 1.5 grams of product. The most useful visual references are the two-finger rule — a line of cream running the length of your index and middle fingers — or, equivalently, about a quarter of a teaspoon. If your sunscreen bottle is lasting you six months, you are almost certainly underdosing. Timing matters too. Apply sunscreen 15 to 30 minutes before sun exposure, not as you walk out the door. This is the same interval used in ISO SPF testing, and it gives the product time to form an even film on the skin [8]. Reapply every two hours during sustained outdoor activity, and immediately after swimming, heavy sweating, or towelling off — even with water-resistant formulas, friction removes a measurable amount of product. Equally important is what most people miss. The ears, the sides and back of the neck, the décolletage, the eyelids (using a formulation safe for that area), the backs of the hands, and the tops of the feet are some of the most common sites for chronic sun damage and pre-cancerous lesions, precisely because they are forgotten in daily application. A useful habit is to apply sunscreen in the same routine order every morning so nothing gets skipped. One small but important point on makeup with SPF. Foundation, powder, or BB cream containing SPF can be a useful additional layer, but it should never be your only source of protection. Most people apply a fraction of the foundation dose that would deliver the labelled SPF, and SPF values from different products do not add up — applying an SPF 30 foundation over an SPF 30 sunscreen does not give you SPF 60. You get whichever number is higher. Treat sunscreen as the protection layer and makeup as a bonus, not the other way around. Mineral and chemical sunscreens — what actually matters UV filters fall into two broad categories, and both have legitimate places in modern photoprotection. The choice between them is often presented as more dramatic than it actually is, but understanding the trade-offs helps you pick what works for your skin. Mineral filters — primarily zinc oxide and titanium dioxide — sit on the surface of the skin and work mainly by absorbing UV radiation, with a small amount reflected. They are generally well-tolerated, photostable, and start working immediately on application, which makes them particularly suitable for sensitive skin, reactive skin, rosacea, post-procedure care, infants and children, and pregnancy. The classic drawback is the white cast, especially with higher concentrations of zinc oxide, although modern micronised formulations have largely solved this on most skin tones. Chemical filters — including modern molecules like Tinosorb S, Tinosorb M, Uvinul A Plus, Mexoryl, and bemotrizinol — work by absorbing UV radiation and converting it into a small amount of heat. They allow for lighter, more elegant textures, layer beautifully under makeup, and the newer generation are remarkably photostable and well-studied for safety. The reputation that chemical sunscreens are "worse" than mineral ones is largely a legacy of older filters like oxybenzone, which has been progressively replaced in European formulations by far better alternatives. Many of the best modern sunscreens use hybrid formulations that combine mineral and chemical filters to get the benefits of both — broad protection, cosmetic elegance, and tolerance. If you have sensitive or reactive skin, a tendency to redness, or a diagnosed condition like rosacea or perioral dermatitis, mineral or hybrid formulas with a high proportion of zinc oxide are usually the safer starting point. If you have normal or oily skin and want something invisible under makeup, well-formulated chemical sunscreens are an excellent choice. Neither category is intrinsically dangerous, and choosing one over the other should be based on your skin's needs, not on marketing fear. Why daily SPF matters — yes, even in winter One of the most persistent myths in skincare is that sunscreen is a summer product. This belief survives mainly because of how dramatic sunburn is — visible, painful, immediate — and how invisible UVA damage feels in comparison. But the data is unambiguous: UVA is present at meaningful levels every single day of the year, including overcast winter mornings, and it is doing slow, cumulative damage whether you can feel it or not. Winter introduces some additional factors that make daily SPF arguably more important, not less. According to the World Health Organization, snow can reflect up to 80% of UV radiation, which is why a day on the slopes can burn your face as severely as a Mediterranean beach [3]. Dry beach sand reflects around 15%, sea foam about 25%. The cold itself weakens the skin barrier — that thin lipid-rich layer that keeps moisture in and irritants out — making it more vulnerable to oxidative damage. The contrast between freezing air outside and dry, heated air indoors compounds the effect. The result is skin that is simultaneously more exposed to UV and less able to defend itself against it. For anyone who spends time outdoors in winter — running, skiing, walking to work, even just walking the dog — a daily broad-spectrum SPF 50 is not overkill. It is the baseline. Pair it with a stable vitamin C serum in the morning and you have built a meaningful preventive shield against photoaging, no matter the season. Choosing the right SPF for your skin type The best sunscreen is the one you will actually use every day. Beyond that, matching the formulation to your skin type makes a meaningful difference to both comfort and outcomes. Sensitive, reactive, and rosacea-prone skin tolerates mineral or hybrid formulations best, particularly those with a high proportion of zinc oxide. Look for products free from fragrance, essential oils, and high concentrations of alcohol. Anti-redness ingredients like niacinamide or specific botanical complexes can be a useful bonus. This skin type benefits from a single, well-chosen daily SPF rather than rotating products. Oily and acne-prone skin needs lightweight, non-comedogenic textures — fluids, gels, and matt-finish creams. Avoid heavy occlusive ingredients that can trap sebum. Modern chemical or hybrid formulations tend to work well here. Be wary of the assumption that "all sunscreens cause breakouts" — usually the issue is texture or specific ingredients, not the act of applying sunscreen itself. Dry and mature skin can use richer SPF creams with added emollients and humectants. Look for formulations that combine UV protection with moisturising and barrier-supporting ingredients. Some people prefer to apply a separate moisturiser under their sunscreen; others find a single hybrid product more practical for daily use. Both approaches are valid. Skin prone to hyperpigmentation — whether from sun, hormones, or post-inflammatory marks after acne — benefits most from high SPF (50+), broad-spectrum coverage, and additional protection against visible light, which also contributes to pigmentation in darker skin tones. A vitamin C serum applied underneath provides additional antioxidant defence and helps fade existing pigmentation over time. Active and outdoor skin — for cycling, running, hiking, skiing, watersports — needs water-resistant formulations that hold up to sweat and friction. Apply generously before exposure and reapply every two hours, regardless of the resistance claim on the bottle. No sunscreen is truly waterproof. The Ph.Doctor approach to sun protection Ph.Doctor is a dermocosmetics line developed by Dr. Nina Wiśniewska and biotechnologist Anna Sienkiewicz. Our sun protection range includes two SPF 50+ creams designed for distinct use cases, both tested according to European standards: ISO 24444:2019/AMD 1:2022 for the SPF value and ISO 24443:2021 for UVA protection. A simple way to decide which one is for you: SUNSET AR — daily face cream for skin with a tendency to redness and visible vascularity. SUNSET SPORT — water- and sweat-resistant cream for active outdoor use and athletes. SUNSET AR Day Face Cream with SPF 50+ SEE PRODUCT SUNSET AR Day Face Cream with SPF 50+ is intended for all skin types, with a particular recommendation for people with vascular skin and a tendency to redness. It is designed for year-round use. The cream was tested for 28 days on people with sensitive skin prone to erythema, with measured reductions in redness and erythema area. Use daily in an amount corresponding to the length of two fingers; reapply every 2–3 hours during prolonged sun exposure. SUNSET SPORT SPF 50+ SEE PRODUCT SUNSET SPORT SPF 50+ is intended for all skin types, for year-round use including athletes and people active outdoors. In addition to the SPF and UVA standards above, the cream is tested for water resistance under ISO 2444:2019/A1:2022 and ISO 18861:2020 — with a separate water-resistance test performed after cycling. It was tested in application by 30 people actively practising sports. Apply at least one pump for the face (approximately 0.8–0.9 g per pump); reapply every 2–3 hours during prolonged sun exposure. If you use makeup, wait 10 minutes after applying the sunscreen. For both products, we recommend layering a stable vitamin C serum underneath. Our C Tetra Sérum uses vitamin C in the form of ascorbyl tetraisopalmitate — a stable, fat-soluble form of vitamin C that is well tolerated even by sensitive skin and does not require a low pH to be effective. According to the product specification, it acts as an antioxidant ideal for use under sunscreen, and increases the degree of UV protection. The product is vegan, contains 88% ingredients of natural origin and is suitable for pregnant and breastfeeding women. Apply 3 to 5 drops to the face and neck in the morning and evening; once absorbed, follow with a Ph.Doctor moisturiser. Frequently asked questions What is the difference between sunscreen and sunblock? In modern dermatology and regulatory terminology, the distinction has largely disappeared — no UV filter blocks 100% of radiation, even at high SPF, so "sunblock" is technically misleading. In most countries, including the EU, products are labelled simply as sunscreen or sun protection. Older language sometimes used "sunblock" for mineral filters and "sunscreen" for chemical, but this is no longer meaningful. What is the difference between SPF 30 and SPF 50? SPF 30 blocks about 97% of UVB radiation; SPF 50 blocks about 98% [9]. The difference sounds small, but it matters more than the numbers suggest — going from 3% transmitted UVB to 2% effectively halves the radiation that reaches your skin. Over years of daily use, that compounds. For daily preventive protection, SPF 50 is the dermatologically preferred choice. Do I need sunscreen if I work indoors? For most office settings, the UV exposure through windows is real but modest, and the main consideration is consistency. If you sit close to a window for hours at a time, or work from home in a sunlit room, daily SPF is worth the small effort. If your daily indoor exposure is genuinely minimal, the priority is wearing sunscreen reliably on the days you do go outside — including grey, overcast, and winter days. Does daily sunscreen cause vitamin D deficiency? Current evidence is mixed. A 2025 systematic review and meta-analysis pooling data from seven studies found that regular sunscreen use was associated with a small reduction in serum 25(OH)D levels — on the order of around 2 ng/mL — but the broader population-level effect is modest, and most authors conclude that incidental daily sun exposure remains sufficient for most healthy adults [10]. If you are at higher risk of deficiency — limited outdoor time, darker skin tones, northern latitudes, older age — supplementation is a safer and more controllable solution than deliberately skipping sunscreen. Can I use the same sunscreen for my face and body? Technically yes, but facial sunscreens are formulated for a much smaller surface area and tend to be more expensive per millilitre. Many also include anti-aging and skin-care active ingredients that are wasted on the body. A separate body sunscreen — simpler, larger volume, easier to apply generously — is usually the practical choice, especially for extended outdoor activity. Can I combine sunscreen with vitamin C? Yes, and you should. Vitamin C is one of the most well-studied antioxidants in skincare and provides a complementary layer of defence: sunscreen blocks most UV radiation, and vitamin C neutralises the free radicals from whatever gets through. The standard morning sequence is cleanse, vitamin C serum, moisturiser if needed, then sunscreen as the final step. How often do I really need to reapply? Every two hours of continuous sun exposure, immediately after swimming or heavy sweating, and after towel-drying. For a normal day at the office or at home, a single morning application is usually adequate. The two-hour rule applies most strictly to outdoor, daytime use during peak UV. Is mineral sunscreen always better for sensitive skin? Often, but not always. Zinc oxide and titanium dioxide are well-tolerated by most reactive skin types, which is why they are the default recommendation for rosacea, post-procedure care, and pregnancy. That said, modern chemical filters used in European formulations — particularly Tinosorb S, Tinosorb M, and bemotrizinol — are also well-tolerated by most users and may be more cosmetically elegant. The right choice depends on your specific reactivity pattern. If you would like to read about a closely related topic — uneven skin tone, pigmentation, and hyperpigmentation — see our article on pigmentation and skin discolouration, and what actually helps. Selected references Flament F, Bazin R, Laquieze S, Rubert V, Simonpietri E, Piot B. Effect of the sun on visible clinical signs of aging in Caucasian skin. Clin Cosmet Investig Dermatol. 2013;6:221–232. The study quantified the contribution of UV exposure to facial aging signs at 80.3% ± 4.82% (sun damage percentage, SDP) in a cohort of nearly 300 Caucasian women. Krutmann J, Bouloc A, Sore G, Bernard BA, Passeron T. The skin aging exposome. J Dermatol Sci. 2017;85(3):152–161. Foundational review establishing the "skin exposome" framework — UV radiation, pollution, smoking, nutrition, stress and lack of sleep as the primary external drivers of skin aging. World Health Organization. Ultraviolet (UV) radiation — Q&A. WHO confirms that long-wavelength UVA accounts for approximately 95% of UV radiation reaching the Earth's surface, that snow can reflect as much as 80% of UV radiation, and that UV is a small fraction of total solar irradiance. International Agency for Research on Cancer (IARC). Solar and Ultraviolet Radiation — IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. Reference data on UVB representing about 5% of solar UV reaching Earth's surface; reviews altitude, latitude, and cloud effects on UVB intensity. Singh A, Yadav S, Mehta D, et al. A comprehensive review of the role of UV radiation in photoaging processes between different types of skin. 2025. Reviews the role of matrix metalloproteinases (MMPs) in UV-induced collagen degradation and the differential photoaging mechanisms across Fitzpatrick skin types. Hughes MC, Williams GM, Baker P, Green AC. Sunscreen and prevention of skin aging: a randomized trial. Ann Intern Med. 2013;158(11):781–790. The landmark Nambour randomized controlled trial in 903 Australian adults, showing 24% less photoaging (measured by skin-surface microtopography) in the daily-sunscreen group versus discretionary use over 4.5 years of follow-up. Petersen B, Wulf HC. Application of sunscreen — theory and reality. Photodermatol Photoimmunol Photomed. 2014;30(2-3):96–101. Literature review documenting that real-world sunscreen application typically delivers only 0.39–1.0 mg/cm² versus the 2 mg/cm² test dose, substantially reducing the protection factor delivered in practice. International Organization for Standardization. ISO 24444:2019 — Cosmetics — Sun protection test methods — In vivo determination of the sun protection factor (SPF). Specifies the standard test dose of 2.0 mg/cm² ± 0.05 and the 15–30 minute interval between application and UV exposure. Northwestern Medicine. What do the SPF numbers mean? Confirms that SPF 30 blocks approximately 97% and SPF 50 blocks approximately 98% of UVB radiation. Consistent with FDA and dermatology consensus. Gatta E, Cappelli C. Sunscreen and 25-Hydroxyvitamin D levels: friends or foes? A systematic review and meta-analysis. Endocr Pract. 2025. Meta-analysis of seven prospective studies in 1,495 adults reporting a standardized mean difference of approximately –2 ng/mL in serum 25(OH)D associated with sunscreen use, with significant heterogeneity in clinical impact.

Jak bezpečně pečovat o aknózní pleť během dermatologické léčby retinoidy a antibiotiky? Článek vysvětluje, které produkty Ph.Doctor jsou vhodné během jednotlivých fází léčby a na co si dát pozor, abyste pokožce neublížili a podpořili její regeneraci.

Jak alkohol ovlivňuje kondici pleti? Dehydruje, zvyšuje citlivost pleti a urychluje tvorbu vrásek. Zjistěte, jak tomu předejít správnou hydratací, péčí a nahrazením alkoholu šetrnějšími nápoji.

Jak začít s péčí o pleť? Klíčem je obnova lipidové bariéry, dvojí čištění a správná aplikace produktů. Podívejte se na doporučenou rutinu a postupy, které posílí a zklidní vaši pleť.

Pokud je vaše pleť poškrábaná, zašedlá a plná pigmentových skvrn, pravděpodobně máte jizvy po akné. První krok: přestaňte se škrábat, mačkat pupínky a používat hrubé peelingy.Tím jen zhoršujete zánět a podporujete vznik pigmentových skvrn. Regenerace pleti s Tetra C Sérum Ph.Doctor Vyzkoušejte Tetra C Sérum Ph.Doctor, které obsahuje 3 % tetraizopalmitátu askorbylu, stabilní a účinnou formu vitaminu C. Díky emulzní textuře poskytuje vysokou biologickou dostupnost aktivních látek z lipofilní i hydrofilní fáze. Sérum je obohacené o hydratační látky: kyselinu hyaluronovou, silanetriol, alantoin a D-panthenol, který poskytuje tak komplexní péči bez ucpávání pórů. Dále obsahuje výživné emolienty jako makadamový a rýžový olej, vitamín E a skvalan.Pokročilá složka Dermcom (2%) stimuluje tvorbu kolagenu a elastinu. Laboratorní testy prokázaly nárůst kolagenu o 115 % po 2 týdnech, takže pleť je pevnější a pružnější. Jak používat produkty Ph.Doctor Čištění: Jemná čisticí emulze Ph.Doctor (pH 4,5–6) Ráno: Tetra C Serum Ph.Doctor + Lipidový krém Ph.Doctor Večer: FACE & BODY RetinALL (retinal 0,05 %) nebo RetinALL IN ONE (retinal 0,1 %) Po 15 minutách můžete nanést Lipidový krém Ph.Doctor. Kombinace retinoidů a vitaminu C Ano, Tetra C Sérum můžete bezpečně kombinovat s retinalem.Pokud používáte retinoidy na předpis, poraďte se s dermatologem. Nezapomínejte na SPF! Každodenní ochrana SPF 50 je klíčem ke zdravé pleti po celý rok. Doplňková péče Krémový tělový balzám Ph.Doctor – naneste do 5 minut po koupeli. Peeling s 12% kyselinou mléčnou Ph.Doctor – vyhlazuje, rozjasňuje a stimuluje tvorbu kolagenu. Používejte střídavě s retinalovými krémy po dosažení tolerance pokožky.

Trápí vás celulitida? Naučte se rozpoznat vodní a tukovou celulitidu a zjistěte, jak na ni účinně. Správná péče, kartáčování těla, studené oplachování i speciální kosmetika Ph.Doctor vám pomohou vyhladit pokožku a zbavit se pomerančové kůže.

Trápí vás alergie na kosmetiku? Zjistěte, jak správně provést alergický test doma. Jednoduchý postup vám pomůže odhalit možnou reakci ještě před plným použitím produktu a ochránit vaši pleť před nežádoucími projevy.

Trápí vás mastná pleť? Objevte, jak ji šetrně čistit, hydratovat a regulovat tvorbu mazu. Ph.Doctor nabízí účinnou péči, která zmatní pleť, zjemní póry a pomůže předcházet nedokonalostem.

Chcete zpomalit stárnutí pleti? Retinal podporuje kolagen, vyhlazuje vrásky a pomáhá sjednotit tón pokožky. Zároveň redukuje akné i pigmentace a zlepšuje texturu pleti.

Jak zachovat mladistvý vzhled pleti? Řešte její pH! Tato péče vám pomůže k hydratované pokožce s menším výskytem vrásek.

Péče o pleť je velmi důležitá.Správná péče o pleť je velmi důležitá pro udržení zdravé, hydratované a mladistvé pleti. Pokud máte citlivou nebo velmi suchou pleť, můžete používat celou kosmetickou řadu Ph.Doctor. Všechny naše produkty byly testovány na lidech se suchou, citlivou a k atopii náchylnou pokožkou. Pokud máte alergickou nebo atopickou pokožku, důrazně doporučujeme před prvním použitím provést test alergie.Pro každodenní čištění pleti je nejlepší volbou Jemná čisticí emulze na obličej Ph.Doctor. V případě, že trpíte atopickou dermatitidou, volte raději čisticí přípravky s obsahem emoliencií, které jsou speciálně určeny právě pro tento typ pokožky.  Každé ráno nezapomeňte na celoroční SPF krém s ochranným faktorem 50+, který chrání pokožku před slunečními paprsky a je pro citlivou pleť naprosto nezbytný. Můžete také aplikovat Sérum s glutathionem Ph.Doctor na horní i dolní víčka, ale pouze na nepoškozené oblasti. Pokud vás trápí aktivní atopická dermatitida nebo ekzém očních víček, obraťte se na svého lékaře a nepokoušejte se problém řešit sami. Nezapomínejte ani na péči o ruce pomocí anti-age krému na ruce s vitamínem C Ph.Doctor, protože ruce stárnou nejrychleji ze všech částí těla. Peeling na obličej a tělo s 12% kyselinou mléčnou aplikujte pouze jednou týdně a postupně prodlužujte dobu jeho působení na kůži, maximálně však na 15 minut, poté vždy důkladně opláchněte. Naneste peeling na vyčištěnou a osušenou pleť, nechte působit 10 až 15 minut a poté opláchněte. Tento postup opakujte jednou až dvakrát týdně. Pro aplikaci na tělo postupujte obdobně: naneste na vyčištěnou a osušenou pokožku těla, nechte působit maximálně 15 minut a opláchněte. Peeling na tělo můžete používat dvakrát až třikrát týdně.

Sensitive oily skin (OS) is a complex of oily and sensitive skin. OS skin can be divided into four types: acne, rosacea, burning and allergy. Enlarged pores, acne or seborrheic dermatitis are elements of oily skin. In the case of sensitive skin, subjective hypersensitivity to external factors (cosmetics, medications, temperature differences) causes a feeling of discomfort: tightness, burning, stinging or itching. The rosacea subtype is characterized by recurrent redness and a feeling of heat, often accompanied by inflammatory nodules and telangiectasia. There is also an allergic subtype of the skin in which we have features of contact urticaria. There is a wheal and redness in response to fragrances and preservatives. The cause of OS syndrome is excessive "washing of oily skin" with strongly foaming agents, too frequent and thick peelings - this ultimately disrupts the composition of the skin's lipids and damages the lipid barrier. Sebum plays a major role in skin hydration, and also guards the integrity of the skin barrier. Therefore, too aggressive an approach to the skin, disruption of the lipid barrier can lead to the development of oily sensitive skin (OS). Care for oily sensitive skin must be approached with caution, it is very important to maintain a balance between gentle removal and secretion of excess sebum. OS Skin Care Plan Ph.Doctor Gentle Facial Cleansing Emulsion - wash your face and neck twice a day for at least 1 minute. In the evening, remove your make-up with your favorite product and then use our cleansing emulsion. Tetra C Serum Ph. Doctor - use one drop in the morning and evening right after washing your face. Lipid face cream Ph.Doctor - use after the Ph.Doctor serum has been absorbed. Remember about photoprotection in the morning - a cream with SPF 50 UVA/UVB filter is mandatory for oily skin - choose light emulsions, without alcohol. We recommend that in case of enlarged pores and overproduction of sebum, a product with retinoids be included in your evening care. Choose FACE & BODY RetinALL 0.05% and if you are just starting out, proceed as follows: for 2 weeks, use RetinALL 2 times a week, for the next 3 weeks 3 times a week, for the next 4 weeks 4 times a week, for the next 5 weeks 5 times a week. FACE & BODY RetinALL Cream with a stable form of retinal 0.05% 289.00 PLN SEE PRODUCT https://phdoctorlab.pl/blogs/base-of-knowledge/ctory-produkt-wybrac-krem-do-za-stable-forma-retinalu-retinall-in-one-0-1-czy-krem-ze-stable-forma-retinalu-face-body-retinall-0-05 Once you have built up a tolerance to retinal, which usually takes at least 2-3 months, you can think about adding Lactic Acid 12% Face and Body Peeling to your evening care routine - in an alternating pattern, on the day of acid application do not use retinoids. 1-2 times a week apply acid to washed, dried facial skin according to the following scheme: 1 week 3 minutes, 2 week 5 minutes, 3 week 10 minutes, 4 week 15 minutes (this is the maximum time). You can use the entire Ph. Doctor cosmetic line with the OS syndrome. If you have allergic, atopic skin, perform an allergy test. Ph. Doctor products have been tested on people with dry, atopy-prone, sensitive skin (tested consumer group). You can eliminate dilated blood vessels on the skin of the face in aesthetic medicine clinics with a laser, after consulting a dermatologist. Often, dilated blood vessels on the face are the first phase of rosacea. Also pay attention to lumps, pimples and the lack of blackheads - here the doctor will probably recommend treatment including prescription preparations. Then, in your care, you can use an over-the-counter preparation with azelaic acid 15 or 20% (you can buy it in a pharmacy without a prescription, it is also safe during pregnancy and for nursing mothers). In the PubMed database we can find publications which show that retinal (retinaldehyde) has a beneficial effect on the vascular component of rosacea (erythema and telangiectasia) https://pubmed.ncbi.nlm.nih.gov/10473962/ . Fun fact : - it is reported that the average sebum production in healthy adults is approximately 1 mg/ 10 cm2 every 3 hours, -if the rate drops to <0.5 mg/ 10 cm2 per 3 hours, dry skin may occur, -if sebum production exceeds 1.5 mg/ 10 cm2 every 3 hours, it causes oily skin or seborrhea. https://phdoctorlab.pl/blogs/baza-wiedzy/proba-uczuleniowa-jak-wykonac