Retinol? retinal? Tretinoin? My guide - Cyrille Laurent
P. aeruginosa Metabolome Database: Retinol (PAMDB002050)
Amazon.com: Talsen Chemicals Vitamin A Powder Retinyl Palmitate, Pure Retinol Powdered Vitamin Water Soluble Vitamin A USP & Cosmetic Grade (2 oz. / 56 Grams) : Health & Household