Also known as: Vitamin A, All-Trans Retinol
Retinol is the most widely used over-the-counter retinoid. It converts to retinoic acid in the skin through a two-step enzymatic process. It accelerates cell turnover, stimulates collagen production, reduces the appearance of fine lines and wrinkles, and treats acne. Causes initial purging and sensitivity. Should be introduced gradually and used with SPF. The gold standard anti-ageing ingredient.
Comedogenicity ratings are based on the rabbit ear assay model. Individual skin responses vary. See our article on comedogenicity ratings for context.
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