Retinol / Retinoids
Medically reviewed: Dr. Murat Toktamışoğlu · 2026-05-21
Definition
Vitamin A derivatives regulating cell turnover, collagen synthesis, melanin distribution. Most evidence-based topical anti-aging.
Detail
Potency: retinyl ester < retinol < retinaldehyde < tretinoin (Rx). 0.025-0.1% standard. First 6 weeks irritation. Pregnancy contraindicated.