Patents

Emulsifier-Free Sunscreen Gel with Transparent Application

L'Oréal is awarded US Patent No. 11,752,081 B2.

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By: Christine Esposito

Editor-in-Chief

US Patent No. 11,752,081 B2 (Noah Louis Wieder, Paula Cziryak, Mark Zaw); L’Oréal, Paris, has patented an emulsifier-free sunscreen composition. It is comprised of a suspension of oil phase droplets in a water phase. 

The oil phase droplets consist of a UV filter system present from at least 22% by weight of the composition and comprising one or more oil soluble UV sun filters including octisalate and at least one diol present from about 1% to about 2%, the ratio of octisalate to diol in the range from about 1.3:1 to about 3.3:1 octisalate:diol, by weight based on the weight of the composition; and only a single amino acid gelling agent; optionally, dimethicone (and) dimethicone/vinyl dimethicone crosspolymer; and optionally, additives selected from the group consisting of fragrances, preservatives, proteins, protein hydrolysates, vitamins, coloring materials; dimethicone; essential oils sesame oil, peppermint oil, macadamia nut oil, tea tree oil, evening primrose oil, sage oil, rosemary oil, coriander oil, thyme oil, pimento berries oil, rose oil, anise oil, balsam oil, bergamot oil, rosewood oil, cedar oil, chamomile oil, sage oil, clary sage oil, clove oil, cypress oil, eucalyptus oil, fennel oil, sea fennel oil, frankincense oil, geranium oil, ginger oil, grapefruit oil, jasmine oil, juniper oil, lavender oil, lemon oil, lemongrass oil, lime oil, mandarin oil, marjoram oil, myrrh oil, neroli oil, orange oil, patchouli oil, pepper oil, black pepper oil, petitgrain oil, pine oil, rose otto oil, rosemary oil, sandalwood oil, spearmint oil, spikenard oil, vetiver oil, wintergreen oil, ylang ylang, and combinations thereof.

The water phase is comprised water and at least one thickener, wherein components of the oil phase droplets can be blended at a temperature that is below 100°C., and wherein the emulsifier-free sunscreen composition is free of butyloctyl salicylate.

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