If your skin looks scratched and dull and is covered in dark spots, you're most likely dealing with acne scarring.

Step one: stop scratching, stop picking at spots and put away the harsh scrubs.
All you're doing is making the inflammation worse and encouraging more dark spots to form.

Repairing your skin with Tetra C Serum by Ph.Doctor

Try Tetra C Serum by Ph.Doctor, which contains 3% ascorbyl tetraisopalmitate — a stable, highly effective form of vitamin C. Its emulsion texture delivers excellent bioavailability of the actives from both the lipophilic and the hydrophilic phase.

The serum is enriched with hydrating ingredients — hyaluronic acid, silanetriol, allantoin and D-panthenol — so it takes care of your skin from every angle without clogging pores.

It also contains nourishing emollients such as macadamia and rice oil, vitamin E and squalane.
The advanced Dermcom complex (2%) stimulates collagen and elastin production. Lab testing showed a 115% increase in collagen after just two weeks, leaving skin firmer and more elastic.

How to use Ph.Doctor products

  • Cleansing: Gentle facial cleansing emulsion by Ph.Doctor (pH 4.5–6)
  • Morning: Tetra C Serum + Lipid facial cream by Ph.Doctor
  • Evening: FACE & BODY RetinALL (retinal 0.05%) or RetinALL IN ONE (retinal 0.1%)
  • After 15 minutes you can follow with the Lipid facial cream by Ph.Doctor.

Can you combine retinoids and vitamin C?

Yes — Tetra C Serum is perfectly safe to use alongside retinal.
If you're on prescription retinoids, check with your dermatologist first.

And don't forget your SPF!
Daily SPF 50 protection is the single most important habit for healthy skin, all year round.

Complete your routine

  • Cream body lotion by Ph.Doctor – apply within five minutes of stepping out of the bath or shower.
  • Lactic acid 12% Face and body peeling by Ph.Doctor – smooths, brightens and stimulates collagen production.
  • Alternate it with your retinal creams once your skin has built up tolerance.
21. November. 2025 — MUDr. Nina Wiśniewska