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US 2023/0414461 A1Published application
Microgels for the delivery of cosmetic active organic substances
AssigneesLvmh Recherche, Centre National De La Recherche Scientifique, Universite De Pau Et Des Pays De L'adour
InventorsValérie ALARD, Garbine AGUIRRE, Laurent BILLON
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Abstract
The present invention deals with organic cosmetic active molecules encapsulation into temperature-responsive and pH-responsive oligo(ethylene glycol)-based biocompatible microgels that are incorporated into cosmetic compositions for controlled delivery on skin or hair.
Claims16
1-12. (canceled)
A cosmetic treatment method of a subject with a cosmetic active organic sub stance,
- wherein the cosmetic active organic substance is entrapped in at least one crosslinked poly(ethylene glycol) methyl ether methacrylate polymer,
- wherein a weight ratio of entrapped cosmetic active organic substance to crosslinked polymer is from 500 microgram/mg to 10 mg/mg, and
- wherein the crosslinked polymer comprises copolymer chains having diethylene glycol methacrylate monomeric units, oligoethylene glycol methacrylate monomeric units comprising from 6 to 10 ethylene glycol moieties, methacrylic acid monomeric units, and crosslinks,
- the method comprising pH-triggered, temperature-triggered and/or solvent-triggered release of the cosmetic active organic substance for topical delivery of the cosmetic active organic substance to the subject.
1 more element
Dependencies are inferred from the claim text.