An agent for dyeing keratinous material (e.g. human hair) is disclosed. The agent comprises at least one amino-functionalized silicone polymer; at least one color-imparting compound; and at least one addition product of C.sub.1-C.sub.6 alkylene oxide(s) to the esters of C.sub.12-C.sub.30 fatty acids and C.sub.1-C.sub.12 aromatic alcohols. A method for dyeing keratinous material is also disclosed, and comprises applying the agent to keratinous material, exposing the agent to the keratinous material, and rinsing the keratinous material to remove the agent.

Agents and methods for coloring keratinous material, in particular human hair, are provided. In one example, the agent includes (a1) at least one amino-functionalized silicone polymer, (a2) at least one color-imparting compound, and (a3) at least one addition product of ethylene oxide to the esters of C.sub.12-C.sub.24 fatty acids and C.sub.1-C.sub.12 aliphatic alcohols.

A stable and consistent reversible coloured photochromic additive changes colour from original buff to desired colour shade between pink to blue when exposed to sunlight and restores to original colour in the absence of the sunlight; simultaneously having synergistic SPF value of at least 3. The additive comprises titanium dioxide, psuedoboehmite, iron oxide hydroxide and tungsten oxide.

A cosmetic activator system for activating a cosmetic is provided including: an activator having an energy source configured to emit an energy pulse and a controller; and an imprinter having an imprint pattern and at least one activation element configured to be in communication with the energy source, wherein the imprinter is configured to create an imprint on the cosmetic.

A chromic composition adapted for application to a substrate comprising a reversible colour-change composition and a binder composition is provided. The colour change composition includes a leuco-dye and/or liquid crystal. The composition may be applied to keratinous material, polymers or other substrates to provide a colour change effect and other desirable properties such as natural feel and durability.

An antimicrobial composition suitable for use on human skin and containing a UV-detectable compound that will allow for detection of the application of the composition, using a UV-light source. A kit comprising such an antimicrobial composition and a UV-light source.

An agent for dyeing keratinous material is provided. The agent includes (a1) at least one amino-functionalized silicone polymer and (a2) at least one color-imparting compound. Further, the agent includes (a3) at least one preservative and (a4) at least one fat component.

An ink composition including at least one photochromic pigment or dye, at least one film-forming resin, and at least one solvent in which the at least one photochromic pigment or dye and the at least one film-forming resin are dispersible or dissolvable, wherein the components of the ink composition are present in respective amounts such that the ink composition is in the form of a liquid or gel until evaporation of the at least one solvent, and wherein, upon evaporation of the at least one solvent, the at least one film-forming resin forms a film that (a) inhibits the ink composition from degrading when covered with the sunscreen product or (b) inhibits the ink composition from washing off when the sunscreen is washed off or both, the film-forming resin including shellac, polyurethane, acrylic polymer, silicone polymer or a mixture thereof.

Biocompatible, bistable or multistable (P-Type) photochromic nanoparticles or microparticles that can be embedded in the skin using techniques such as those used to create a tattoo with tattoo ink. The color of the tattoo using the biocompatible bistable or multistable photochromic microparticles can be written, erased or changed, and re-written locally in the skin by irradiation with light of appropriate wavelengths. Some formulations with much higher sensitivity to UV light than visible light can also be used as short-term intradermal colorimetric UV dosimeters that can be reset and re-used on an hourly or daily basis. These particles can be uniform aggregates or polymers containing P-type photochromic dyes, microencapsulated or core-shell structures with cores containing P-type photochromic dyes, or solid particulate materials with P-type photochromic dyes adsorbed on the surface or within their pores.

Aspects of the invention include evanescent color change compositions having a colored pigment and a color changer that changes the colored pigment from colored to colorless in response to an applied stimulus to the color changer. Methods for preparing the subject evanescent color change compositions and liquid compositions (e.g., sunscreens) that include the subject evanescent color change compositions are also described. Methods for forming a uniform coating on a surface using the subject evanescent color change compositions are also provided.