Gel-based lipstick having improved rheology

Details Gel-based lipstick having improved rheology Gel-based lipstick having improved rheology

A - Human Necessities

61

K

A61K 8/92 (2006.01) A61K 8/88 (2006.01) A61Q 17/00 (2006.01)

Patent

CA 2671363

Gel-based lipstick compositions are disclosed comprising an ester terminated poly(ester-amide) (ETPEA) polymeric gellant, a first wax component having a melting point above the sol-gel transition temperature of the ETPEA gellant, a second wax compositions having a melting point equal to of below the sol-gel transition temperature of the ETPEA gellant, optionally a silicone T-resin co-gellent, and one or more oils capable of forming a gel with the ETPEA gellant. The gel compositions are solid or semi-solid at room temperature and are capable of being molded into self-supporting sticks. The disclosed gels provide high gloss films when applied to the lips and/or provide a rheology characterized by a high viscosity over repeated shear cycles.

L'invention concerne des compositions de rouge à lèvres à base de gel qui comprennent un gélifiant polymère de poly(ester-amide) à terminaison ester (ETPEA), un premier composant de cire ayant un point de fusion supérieur à la température de transition sol-gel du gélifiant ETPEA, une seconde composition de cire ayant un point de fusion inférieur ou égal à la température de transition sol-gel du gélifiant ETPEA, facultativement un cogélifiant en résine silicone T et une ou plusieurs huiles capables de former un gel avec le gélifiant ETPEA. Les compositions de gel sont solides ou demi-solides à température ambiante et peuvent être moulées en bâtonnets autoporteurs. Les gels décrits fournissent des films de brillance élevée lorsqu'ils sont appliqués sur les lèvres et/ou fournissent une rhéologie caractérisée par une viscosité élevée sur des cycles de cisaillement répétés.

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