Retinol, an active form of vitamin A, is one of the most sought-after ingredients in cosmetics for its proven anti-aging benefits. Used to stimulate cell renewal, it helps reduce wrinkles, fine lines, hyperpigmentation and improve skin texture. In this article, we explore the different forms of retinol, from retinyl ester to pure retinol and retinaldehyde, and their respective efficacy on the skin. We also detail its mechanism of action: by binding to nuclear receptors, retinol activates collagen production and inhibits its degradation, enabling it to combat skin ageing.
However, it is not without risks. Excessive use can lead to skin irritation and even hypervitaminosis A. That's why a gradual approach and adaptation of concentration are essential.
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