Patents

Oil-in-Water Emulsion with Stabilized Retinol Patented by L’Oréal

Retains at least 90 wt.% of the retinol after storage for eight weeks at 45°C in a light-resistant glass container.

US Patent No. 11,865,197 B2 (Jonathan James Faig, David Chan, Susan Halpern); L’Oréal, Paris, has patented an an oil-in-water emulsion that is comprised of approximately 0.1-2 wt.% of retinol; pentaerythrityl tetra-di-t-butyl hydroxyhydrocinnamate; trisodium ethylenediamine disuccinate; polyglyceryl-3 methylglucose distearate; sodium polyacrylate; an oil phase; water; and of one or more polyols having 3 to 16 carbon atoms.

The composition does not phase separate and retains at least 90 wt.% of the retinol after storage for eight weeks at 45°C in a light-resistant glass container without protective packaging.

Additional Reading

The Beauty of Retinoids in Cosmetics Chemistry

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