Compositions and methods for darkening keratinous fibers

1. An anhydrous cosmetic or pharmaceutical composition for coating keratinous fibers, the composition comprising more than 50% of at least one perfluoro compound selected from the group consisting of perfluorocycloalkanes, hydrofluoroethers and perfluoromorpholines.

2. The composition of claim 1 in which the perfluoro compound is a perfluorocycloalkane or hydrofluoroether.

3. The composition of claim 1 further comprising a fluorinated wax.

4. The composition of claim 2 in which the perfluorocycloalkane comprises is selected from the group consisting of perfluorodecalin, perfluoromethyldecalin, perfluorohydrophenanthrene, or perfluoro-1,3-dimethylcyclohexane, or a combination thereof.

5. The composition of claim 4 in which the perfluoro compound is a perfluoro-1,3-dimethylcyclohexane.

6. The composition of claim 1 further comprising a perfluorocarbon film-former which is a fluorinated oligomer.

7. The composition of claim 6 wherein the fluorinated oligomer is a byproduct of perfluorotetradecahydrophenanthrene.

8. A cosmetic or pharmaceutical composition for coating keratinous fibers comprising more than 50% of at least one perfluoro compound and at least one perfluorocarbon film-former.

9. The composition of claim 8 in which the perfluoro compound is selected from the group consisting of perfluorocycloalkanes, hydrofluoroethers, perfluoromorpholines, and perfluoroalkanes.

10. The composition of claim 9 in which the perfluoro compound is a perfluorocycloalkane or hydrofluoroether.

11. The composition of claim 8 further comprising a wax.

12. The composition of claim 10 in which the perfluorocycloalkane is selected from the group consisting of perfluorodecalin, perfluoromethyldecalin, perfluorohydrophenanthrene, or perfluoro-1,3-dimethylcyclohexane, or a combination thereof.

13. The composition of claim 10 in which the perfluoro compound is a perfluoro-1,3-dimethylcyclohexane.

14. The composition of claim 8 wherein the perfluorocarbon film-former is a fluorinated oligomer.

15. The composition of claim 8 wherein the fluorinated oligomer is a byproduct of perfluorotetradecahydrophenanthrene.

16. A cosmetic or pharmaceutical composition for coating keratinous fibers comprising at least one perfluoro compound selected from the group consisting of perfluorocycloalkanes, hydrofluoroethers and perfluoromorpholines and at least one fluorinated oligomer.

17. The composition of claim 16 in which the perfluoro compound is a perfluorocycloalkane or hydrofluoroether.

18. The composition of claim 17 in which the perfluorocycloalkane is selected from the group consisting of perfluorodecalin, perfluoromethyldecalin, perfluorohydrophenanthrene, or perfluoro-1,3-dimethylcyclohexane, or a combination thereof.

19. The composition of claim 16 in which the perfluoro compound is a perfluoro-1,3-dimethylcyclohexane.

20. The composition of claim 16 wherein the fluorinated oligomer is a byproduct of perfluorotetradecahydrophenanthrene.

21. A method for darkening keratinous fibers comprising the step of applying to the keratinous fibers an anhydrous composition comprising at least one perfluoro compound selected from the group consisting of perfluorocycloalkanes, hydrofluoroethers and perfluoromorpholines.

22. The method of claim 21 wherein the perfluoro compound is a perfluorocycloalkane or hydrofluoroether.

23. The method of claim 21 wherein the composition further comprises a wax.

24. The method of claim 21 in which the perfluorocycloalkane is selected from the group consisting of perfluorodecalin, perfluoromethyldecalin, perfluorohydrophenanthrene, or perfluoro-1,3-dimethylcyclohexane, or a combination thereof.

25. The method of claim 21 in which the perfluoro compound is a perfluoro-1,3-dimethylcyclohexane.

26. The method of claim 21 wherein the composition further comprises a fluorinated oligomer.

27. The method of claim 26 wherein the fluorinated oligomer is a byproduct of perfluorotetradecahydrophenanthrene.