Geek & Gorgeous 101 A-Game 5 Retinol Serum
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Retinal is the “big brother” molecule of the better known anti-aging superstar, retinol. While retinol needs two metabolic conversion steps to reach the active form, retinoic acid (aka tretinoin), retinal is the direct precursor only one conversion step away from the active form the skin cells understand. It is estimated that retinal can convert more than 10x more efficiently to retinoic acid than retinol, making retinal an outstandingly effective member of the retinoid family (vitamin A family).