Cosmetic composition having a certain thermal profile
View Patent ↗The present disclosure relates to a cosmetic composition comprising, in a physiologically acceptable medium, at least one compound which gives the cosmetic composition a thermal profile having a melting peak wherein the mid-height width Lf is less than or equal to 20° C., and wherein the composition is heat-stable. The present disclosure also relates to the process of depositing a film on the keratin fibers, wherein the film is homogenous and/or has improved curling properties, comprising applying the cosmetic composition disclosed herein to keratin fibers.
1. A cosmetic composition comprising, in a non-toxic medium, polystearyl acrylate having a thermal profile having a melting peak wherein the mid-height width Lf is less than or equal to 20° C.,
wherein said thermal profile is determined by heating an empty crucible and a crucible containing a sample of said composition and measuring the variation of the difference in power absorbed by the empty crucible and by the crucible containing the sample as a function of temperature; and
wherein the cosmetic composition itself has a thermal profile having a melting peak wherein the mid-height width Lf is less than or equal to 20° C.,
and wherein the cosmetic composition further comprises a film-forming polymer selected from:
synthetic polymers resulting from the radical-mediated polymerization of at least one monomer selected from acrylic acid, methacrylic acid, methyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, hydroxyethyl acrylate, hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, and 2-hydroxypropyl methacrylate;
gum arabic;
polyurethanes;
polyesters;
aqueous dispersions of polymers selected from acrylic, polyurethane, and hybrid polymers;
polymers of cellulose selected from hydroethylcellulose, hydroxypropylcellulose, methylcellulose, and carboxymethylcellulose;
polyvinylpyrrolidones;
polyurethane-polyvinylpyrrolidones; and
copolymers of vinyl pyrrolidone and of caprolactam; copolymers of vinylpyrrolidone and of vinyl acetate; copolymers of vinylpyrrolidone and of ethyl methacrylate; butylated polyvinylpyrrolidine; copolymers of vinylpyrrolidone and of eicosene; copolymers of vinylpyrrolidone and of hexadecene; copolymers of vinylpyrrolidone and of triacontene; and copolymers of vinylpyrrolidone and of styrene.
2. The cosmetic composition according to claim 1 , wherein the melting peak of the cosmetic composition has a starting melting temperature To of greater than or equal to 10° C.
3. The cosmetic composition according to claim 2 , wherein the starting melting temperature To of the cosmetic composition is greater than or equal to 15° C.
4. The cosmetic composition according claim 1 , wherein the melting peak of the cosmetic composition has an end melting temperature Tf of less than or equal to 90° C.
5. The cosmetic composition according claim 4 , wherein the end melting temperature Tf of the cosmetic composition is less than or equal to 80° C.
6. The cosmetic composition according claim 5 , wherein the end melting temperature Tf of the cosmetic composition is less than or equal to 70° C.
7. The cosmetic composition according to claim 1 , wherein the melting peak of the cosmetic composition has a melting point ranging from 20° C. to 80° C.
8. The cosmetic composition according to claim 1 , wherein the mid-height width Lf of the cosmetic composition is less than or equal to 10° C.
9. The cosmetic composition according to claim 1 , wherein the melting peak of the cosmetic composition has a temperature amplitude, ΔT, Tf−To, of less than or equal to 30° C.
10. The cosmetic composition according to claim 1 , further comprising an aqueous phase.
11. The cosmetic composition according to claim 1 , further comprising at least one dyestuff.
12. A non-therapeutic cosmetic process for making up a keratin material, comprising applying to the keratin material a cosmetic composition according to claim 1 .
13. A process for coating keratin fibers in order to deposit a film on said keratin fibers, wherein the film is homogenous and/or has improved curling properties, said process comprising applying to the fibers a cosmetic composition according to claim 1 .
14. The cosmetic composition according to claim 1 , wherein the film-forming polymer is selected from:
synthetic polymers resulting from the radical-mediated polymerization of at least one monomer selected from acrylic acid, methacrylic acid, methyl methacrylate, and hydroxyethyl acrylate;
gum arabic;
polyurethanes;
polyesters;
aqueous dispersions of polymers selected from acrylic, polyurethane, and hybrid polymers;
polymers of cellulose selected from hydroethylcellulose, hydroxypropylcellulose, methylcellulose, and carboxymethylcellulose;
polyvinylpyrrolidones;
polyurethane-polyvinylpyrrolidones; and
copolymers of vinyl pyrrolidone and of caprolactam; copolymers of vinylpyrrolidone and of vinyl acetate; copolymers of vinylpyrrolidone and of ethyl methacrylate; butylated polyvinylpyrrolidone; copolymers of vinylpyrrolidone and of eicosene; copolymers of vinylpyrrolidone and of hexadecene; copolymers of vinylpyrrolidone and of triacontene; and copolymers of vinylpyrrolidone and of styrene.
15. The cosmetic composition according to claim 1 , wherein the film-forming polymer is selected from:
synthetic polymers resulting from the radical-mediated polymerization of methacrylic acid;
gum arabic; and
aqueous dispersions of polymers selected from acrylic, polyurethane, and hybrid polymers.
16. The cosmetic composition according to claim 1 , wherein the film-forming polymer is polyvinylpyrrolidone.