10.07.21
US Patent No. 11,135,149 B2 (Susan Halpern, Brian Bodnar, Nicholas David Stebbins); L'Oréal has patented a cosmetic composition comprising a salt activatable component combination that contains a holoside compound selected from the group consisting of methylcellulose, hydroxypropylmethylcellulose (HPMC), hydroxypropylcellulose (HPC) cellulose gum (CG), carrageenan, xanthan gum, and combinations thereof; an alginate compound; and at least one cosmetic active agent comprising at least one UV filter. The composition is devoid of synthetic film formers. The holoside compound and the alginate compound constitute a water resistant film precursor. The exposure of the cosmetic composition to a salt activator activates the salt activatable component combination such that the water resistant film precursor converts to a water resistant film and increases a water resistance of the composition.