Cosmetic composition comprising biodegradable polymers
Disclosed is a cosmetic composition for, e.g., use on eyelashes, that includes a latex polymer and a polyhydroxyalkanoate, where the polyhydroxyalkanoate is present in the composition in a total amount of between about 1% and about 5% by weight, and the monomers of the polyhydroxyalkanoate have carbon chain lengths of between 3 and 5.
1. A cosmetic composition comprising:
at least one waterproofing agent, the at least one waterproofing agent consisting of a latex polymer; and
at least one polyhydroxyalkanoate,
wherein the at least one polyhydroxyalkanoate is present in the composition in a total amount of between about 1% and about 5% by weight,
wherein each of the at least one polyhydroxyalkanoates is composed of at least one monomer having a carbon chain length of L, where 3≤L≤5, and
wherein the composition contains water, the water being present in a total amount of less than about 10% by weight.
2. The cosmetic composition according to claim 1 , wherein the at least one polyhydroxyalkanoate is poly-3-hydroxybutyrate (PH3B), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), or a combination thereof.
3. The cosmetic composition according to claim 1 , wherein each of the at least one polyhydroxyalkanoates is composed of one monomer.
4. The cosmetic composition according to claim 1 , further comprising a colorant.
5. The cosmetic composition according to claim 1 , further comprising at least one wax.
6. The cosmetic composition according to claim 1 , wherein the polyhydroxyalkanoate is a solid particle in powder form.
7. The cosmetic composition according to claim 6 , wherein the average particle size (d50) of the polyhydroxyalkanoate is between about 0.1 nm and 100 μm.
8. The cosmetic composition according to claim 1 , wherein the composition does not include any polyhydroxyalkanoates with monomers having a carbon chain length greater than 5.
9. The cosmetic composition according to claim 1 , wherein the composition does not include any cellulose or cellulose derivatives.
10. The cosmetic composition according to claim 1 , further comprising a preservative.
11. The cosmetic composition according to claim 1 , further comprising a surfactant.
12. The cosmetic composition according to claim 1 , further comprising a hydrophilic gelling agent.
13. The cosmetic composition according to claim 1 , further comprising a lipophilic gelling agent.
14. A method for treating eyelashes, comprising the steps of:
applying a cosmetic composition according to claim 1 to an eyelash; and
allowing the cosmetic composition to remain in contact with the eyelash.
15. The method according to claim 14 , further comprising allowing the cosmetic composition to remain on the eyelash for between 5 minutes and 24 hours.
16. The method according to claim 14 , further comprising removing the cosmetic composition.
17. A cosmetic composition comprising:
at least one waterproofing agent, the at least one waterproofing agent consisting of a latex polymer; and
at least one polyhydroxyalkanoate,
wherein the at least one polyhydroxyalkanoate is present in the composition in a total amount of between about 1% and about 5% by weight,
wherein each of the at least one polyhydroxyalkanoates is a powder, and
wherein the composition contains water, the water being present in a total amount of less than about 10% by weight.