Hydroxypinacolone Retinoate 10%,HPR10, with INCI name Hydroxypinacolone Retinoate and Dimethyl Isosorbidei,s formulated by Hydroxypinacolone Retinoate with Dimethyl Isosorbide,it is a an ester of all-trans Retinoic Acid,which are natural and synthetic derivatives of vitamin A, capable of binding to retinoid receptors. The binding of retinoid receptors can enhance gene expression, which effectively turns key cellular functions on and off. Hydroxypinacolone Retinoate is a retinol derivative, which has the function of regulating the metabolism of the epidermis and stratum corneum, can resist aging, can reduce sebum spillage, dilute epidermal pigments, play a role in preventing skin aging, preventing acne, whitening and light spots. While ensuring the powerful effect of retinol, it also greatly reduces its irritation. It is currently used for anti-aging and prevention of acne recurrence. Key Technical Parameters: Appearance                        Transparent Yellow Liquid Assay 9.5~10.5% Refractive Index 1.450~1.520 Specific Gravity 1.10~1.20g/ml Heavy Metals 10 ppm max. Arsenic 3 ppm max. Total Plate Counts 1,000 cfu/g max. Yeasts & Molds 100 cfu/g max. E.Coli Negative Function: *Anti-aging *Anti-Wrinkle * Skin Conditioning *Whitening Agent *Anti-Acne *Anti-Spot Application: *Anti aging *Wrinkle removing *Skin texture improvement  *Whitening and lightening spots *Reducing skin melanin Acne elimination and auxiliary treatment acne.