A dye for hair coloration that has a long shelf life and is excellent in heat resistance, and a method for producing the dye for hair coloration, are provided. A dye for hair coloration represented by the following general formula (1), the dye for hair coloration having a proportion of a polyatomic anion (An) or impurities derived from An of 1% by mass or less: ##STR00001##
wherein in the formula (1), D represents a cationic moiety of the dye for hair coloration; An represents a polyatomic anion; and a and b each independently represent a value of 0 to 1.

The invention relates to a composition comprising a HIF-1a activity potentiating agent for use in a method of preventing or treating hair loss, wherein the HIF-1a activity potentiating agent is an iron chelator, preferably Deferiprone. The invention further relates to a composition for topical application, comprising a HIF-1a activity potentiating agent that is an iron chelator. Furthermore, the invention relates to a method for cosmetic treatment or prevention of hair loss, comprising topical application of a composition comprising a HIF-1a activity potentiating agent that is an iron chelator to an area of skin.

Provided herein are iron chelating compounds, compositions containing such compounds and methods of using the compounds in treating various aesthetic skin conditions. The iron chelating compositions may be administered topically or orally. Treating the aesthetic skin conditions includes preventing onset or delaying progression of the aesthetic skin condition.

The instant invention refers to the use of a concentrated aqueous polymer dispersion with an average particle size of less than 1000 nm comprising (a) a polymer carrier prepared by heterophase radical polymerization of at least one ethylenically unsaturated monomer in the presence of (b) an oil-soluble organic UV absorber selected from the class of p-aminobenzoic acid derivatives; salicylic acid derivatives; benzophenone derivatives; diphenyl acrylate derivatives; benzofuran derivatives; polymeric UV absorbers, comprising one or more organosilicon radicals; cinnamic acid derivatives; camphor derivatives; s-triazine derivatives; trianilino-s-triazine derivatives; menthyl anthranilates; and benzotriazole derivatives; wherein the weight ratio of the oil-soluble organic UV absorber (b) to polymer carrier (a) is greater than 50 parts UV absorber per 100 parts of carrier; for the protection of human and animal hair and skin against the damaging effect of UV radiation. The concentrated aqueous polymer dispersions show unexpectedly high sunscreen effects and a positive skin feeling.

A computer-based method for determining a sunscreen composition comprising a plurality of UV filter substances, comprises the steps of selecting at least one constraint for at least one characteristic of the composition to be determined (step 30), the at least one constraint comprising a sunscreen performance target; selecting an optimization objective from a plurality of optimization objectives (step 50); and automatically determining the sunscreen composition as a composition of filter substances from a set of filter substances (step 100), the composition meeting the at least one constraint and being optimized with respect to the selected optimization objective. The automatic determination comprises the steps of generating a plurality of candidate compositions, determining a sunscreen performance of the candidate compositions using a performance simulation tool and comparing the determined sunscreen performance of the candidate compositions with the sunscreen performance target. The method allows for an automatic determination of an optimum sunscreen composition based on constraints and objectives, thus avoiding manual trial and error methods that are lengthy and do not always lead to the optimal result.

The present invention relates to a composition for dyeing. The composition for dyeing according to the present invention forms a covalent bond without damaging skin, hair, nails, fibers, or leather by using a reaction promoting additive for promoting peptide bond formation in addition to a carbodiimide-based compound, thereby providing a desired semi-permanent dyeing effect.

The present application relates to perfume raw materials, perfumes, perfume delivery systems and consumer products comprising such perfume raw materials, perfumes and/or such perfume delivery systems, as well as processes for making and using such perfume raw materials, perfume delivery systems and consumer products. The perfumes disclosed herein expand the perfume communities' options.

The present invention relates to a composition comprising, in a cosmetically acceptable medium, at least one water-insoluble solid organic UV-screening agent (A) at least one compound (B) that may be obtained by reaction between: an oil bearing at least one nucleophilic and/or electrophilic reactive function, and a junction group capable of establishing hydrogen bonds with one or more partner junction groups, each junction group pairing involving at least 3 hydrogen bonds, the said junction group bearing at least one reactive function capable of reacting with the reactive function borne by the oil, the said junction group also comprising at least one unit of formula (I) or (II): in which: R1 and R3, which may be identical or different, represent a divalent carbon-based radical; R2 represents a hydrogen atom or a linear, branched or cyclic, saturated or unsaturated, optionally aromatic, C1-C32 carbon-based and especially hydrocarbon-based radical, which may comprise one or more heteroatoms chosen from O, N, S, F, Si and P. ##STR00001##

Disclosed is a method for preparing an ultraviolet radiation absorbing polymer composition comprising the polymer compound of formula ##STR00001##
in an esterification/transesterification which method comprises the steps of reacting a polyglycerol intermediate of formula ##STR00002##
with a benzotriazole UV-chromophore comprising a complementary functional group of formula ##STR00003##
to form the polymer compound of formula (3).

Disclosed is a cosmetic composition for skin whitening. The cosmetic composition for skin whitening contains a whitening component having a specific functional group capable of covalently bonding with a protein residue on the skin surface so as to form a covalent bond without damaging the skin, thereby semi-permanently providing a desired whitening effect.