Drug – bio-affecting and body treating compositions – Live skin colorant containing
Reexamination Certificate
2006-11-02
2010-02-23
Russel, Jeffrey E (Department: 1654)
Drug, bio-affecting and body treating compositions
Live skin colorant containing
C424S064000, C424S078030, C530S327000, C530S329000, C530S345000
Reexamination Certificate
active
07666397
ABSTRACT:
Peptides have been identified that bind with high affinity to hair, skin, and nails. Peptide-based hair conditioners, hair colorants, skin conditioners, skin colorants, and nail colorants are described. The peptide-based hair conditioners and hair colorants consist of a hair-binding peptide coupled to a hair conditioning agent or a coloring agent, respectively. The peptide-based skin conditioners and skin colorants consist of a skin-binding peptide coupled to a skin conditioning agent or a colorant, respectively. The peptide-based nail colorants consist of a nail-binding peptide coupled to a coloring agent. In all these compositions, the peptide may be directly coupled to the active agent or the coupling may be via a spacer. Personal care compositions containing these peptide-based conditioners and colorants are also described.
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Huang Xueying
Wang Hong
Wu Ying
E.I. du Pont de Nemours and Company
Russel Jeffrey E
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