Geek & Gorgeous A-Game Serum, 0.1% Retinal, 1 fl oz/30 mL
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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.
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