公开(公告)号：US09820920B2

公开(公告)日：2017-11-21

申请号：US14502566

申请日：2014-09-30

Applicant: L'OREAL

Inventor： Kevin Nikitczuk ,  Anil Shah ,  Susan Halpern Chirch ,  Jean-Thierry Simonnet

IPC: A61K8/06 ,  A61K8/49 ,  A61K8/44 ,  A61K8/02 ,  A61K47/00 ,  A61K47/30 ,  A61Q17/04 ,  A61K45/06

CPC classification number: A61K8/062 ,  A61K8/0241 ,  A61K8/44 ,  A61K8/4993 ,  A61K45/06 ,  A61K2800/21 ,  A61K2800/262 ,  A61K2800/30 ,  A61Q17/04

Abstract: The present invention relates to a sunscreen composition comprising: a. an aqueous phase; b. an oil phase comprising at least one cosmetically acceptable oil; c. at least one sunscreen active; and d. up to about 5% by weight, based on the total weight of the composition, of an emulsifier system comprising; i. at least one ionic surfactant; ii. at least one nonionic surfactant having an HLB of greater than or equal to about 14; and iii. at least one nonionic surfactant having an HLB of less than or equal to about 10; wherein the composition is an oil-in-water emulsion containing oil droplets having an average particle size of from about 100 to 150 nm, is alcohol-free, and appears semi-transparent to transparent upon application onto an end-user's skin.

公开(公告)号：US09918911B2

公开(公告)日：2018-03-20

申请号：US14655216

申请日：2013-12-24

Applicant: L'OREAL

Inventor： Anil Shah ,  Jean-Thierry Simonnet ,  Carlos Crissien ,  Susan Halpern ,  Kevin Nikitczuk

IPC: A61K8/06 ,  A61K8/37 ,  A61K8/60 ,  A61Q19/00 ,  A61K8/49

CPC classification number: A61K8/062 ,  A61K8/37 ,  A61K8/375 ,  A61K8/4993 ,  A61K8/602 ,  A61K2800/59 ,  A61Q19/00

Abstract: A meta-stable composition, a product including the meta-stable composition, and a method of protecting a keratinous substrate from UV radiation by applying the product are provided. The meta-stable cosmetic composition includes at least one water-in-oil emulsifier having a hydrophilic-lipophilic balance (HLB) of less than 6, at least one non-ionic oil-in-water emulsifier having an HLB of greater than 9, at least one ionic surfactant, and at least one skin care active ingredient. The weight ratio of the at least one non-ionic oil-in-water emulsifier to the at least one water-in-oil emulsifier is about 0.02 to about 2.0. The meta-stable cosmetic composition converts from an oil-in-water (O/W) emulsion to a water-in-oil (W/O) emulsion upon rubbing.