A cosmetic ingredient for cosmetic products has a polymer structure which includes an emollient or film-forming cosmetic polymer which is transparent to light. An organic chromophore molecule is inserted and chemically linked into the polymer, which can be a fixed color molecule or a photochromic molecule capable of rapidly switching from one color to another. The colored or photochromic molecule is inserted and chemically linked by transesterification into a cosmetic oil provided with functionalities which are suitable for the chemical anchoring of the molecule and chemically linked to said oil. The cosmetic oil may be a silicone macrodiol functionalized with a photochromic derivative designed so as to ensure the transition between a colorless state and a colored state following irradiation with ultraviolet light.

The present invention relates to a composition for surface modification. The composition for surface modification according to the present invention contains a particular carbodiimide-based compound, thus forms a covalent bond without damaging skin, hair, or fabric, and semipermanently provides desired skin or hair surface modification effects or fabric care effects.

Compositions, kits, and methods for repairing bonds, for example, disulfide bonds, in hair or on the skin are disclosed. The compositions provide improved conditioning benefit for dry hair or moisturize the skin. The compositions also provide a long lasting moisturized feel and smooth feel to the skin or hair, without feeling greasy. The compositions contain one or more compounds that covalently bind at least two thiol groups in the hair or on the skin. Use of the binding compositions prevents reversion of the repaired bonds to their free thiol state, for at least one week or one month, or more, after a single application of the composition. Improved methods of styling hair, for example permanent hair waving, hair curling, hair coloring or highlighting, and hair straightening, are also provided.

Compositions, kits, and methods for repairing bonds, for example, disulfide bonds, in hair or on the skin are disclosed. The compositions provide improved conditioning benefit for dry hair or moisturize the skin. The compositions also provide a long lasting moisturized feel and smooth feel to the skin or hair, without feeling greasy. The compositions contain one or more compounds that covalently bind at least two thiol groups in the hair or on the skin. Use of the binding compositions prevents reversion of the repaired bonds to their free thiol state, for at least one week or one month, or more, after a single application of the composition. Improved methods of styling hair, for example permanent hair waving, hair curling, hair coloring or highlighting, and hair straightening, are also provided.

The invention includes methods of forming a semi-permanent film on a fiber comprising topically applying an effective amount of a composition to the hair and exposing the hair to a temperature of about 50° C. or greater thereby forming a film on the hair. The composition comprises a chitosan, an aldehyde-bearing compound, and an organic acid. Also included are the compositions that form the film, specifically compositions that form a semi-permanent film on a fiber in the presence of heat comprising a chitosan, an aldehyde-bearing compound, and an organic acid. Other, related methods are within the scope of the invention.

This document provides methods and materials for delivering agents to hair, skin, and/or nails using one or more adhesive molecules alone or in combination with one or more interlocking metals, one or more dyes, and/or one or more polypeptides. For example, methods and materials for delivering interlocking metals, dyes, or polypeptides to hair, skin, or nails of a mammal (e.g., a human) are provided.

Disclosed is a personal care composition comprising: a) particle comprising chitosan salt at the outer surface of the particle; and b) silicone component selected from dimethicone, aminosilicone or a mixture thereof, wherein the silicone component has a viscosity of at least 5,000 cSt at 25° C.

Naphthalimide compounds are used in tissue bonding and protein cross-linking applications. When activated by an activating agent, such as light in the 400-500 nm absorption range, the naphthalimide compounds form chemically-reactive species that cross-link proteins, bond connective tissues together, and bond tissues and other biomaterials together. A naphthalimide-labeled biomolecule, such as a naphthalimide-labeled chitosan, is also capable of bonding tissues without subsequent direct illumination of the contacted tissue area. The naphthalimide compounds may be used in tissue or arterial repair, stabilization of an expanded arterial wall after angioplasty, tethering pharmaceutical agents to tissue surfaces to provide local drug delivery, and for chemically bonding skin care products, sunscreens, and cosmetics to the skin.

Technologies are generally described for a method and compounds for managing dag on hair. The method of managing dag on hair includes applying a low energy compound including a silicone and a terminal reactive group to the hair and applying a hair binding moiety to the hair for functionalizing the low energy compound, at its terminal reactive group, to bind to the hair. The applied low energy compound enables ease of removal of dag from the hair or mitigation of dag formation on the hair. The functionalized low energy compound may be made prior to the application to the hair.

Organofunctional polyorganosiloxanes, their use in cosmetic compositions, method for treating amino acid based substrates with organofunctional polyorganosiloxanes, compositions comprising the organofunctional polyorganosiloxanes useful for hair straightening and shaping as well as hair coloration and hair color retention.