A novel an agent for maintaining or promoting collagen productivity is provided with.

An agent for maintaining or promoting collagen productivity of cells, comprising a wavelength conversion substance as an active ingredient; a composition and a product comprising the agent for maintaining or promoting collagen productivity; and a method for maintaining or promoting collagen productivity by means thereof are provided with. The present invention can exhibit a desirable effect on skin by effectively making use of ultraviolet light to maintain or promoting collagen productivity in skin cells.

A novel an agent for maintaining or promoting collagen productivity is provided with.

An agent for maintaining or promoting collagen productivity of cells, comprising a wavelength conversion substance as an active ingredient; a composition and a product comprising the agent for maintaining or promoting collagen productivity; and a method for maintaining or promoting collagen productivity by means thereof are provided with. The present invention can exhibit a desirable effect on skin by effectively making use of ultraviolet light to maintain or promoting collagen productivity in skin cells.

A hair dyeing method that involves first step of applying on the hair a hair dye composition containing a compound represented by the following general formula (1A) or a salt thereof and an organic alkaline agent and having a pH of 9.0 or more and 11.0 or less:

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wherein a broken line represents the presence or absence of a π bond; R.sup.1 represents a hydroxy group or an acetoxy group; and R.sup.2 represents a hydrogen atom, an acetyl group, a methyl group, or an ethyl group; and a second step of applying on the hair a hair treatment agent containing an organic acid or a salt thereof and having a pH of 5.5 or less. After performing the first step, the hair is subjected to the second step while maintaining in a wet state in which an amount of water per gram of the hair is 0.008 g or more.

The present invention relates to a hydroxyapatite-supporting porous silica particle, in which hydroxyapatite is supported on a surface a spherical porous silica particle and inner surfaces of pores of the spherical porous silica particle, and in which the hydroxyapatite-supporting porous silica particle has a circularity of 0.760 or larger, a method for producing the hydroxyapatite-supporting porous silica particles, and a composition containing the hydroxyapatite-supporting porous silica particle.

The present invention relates to a hydroxyapatite-supporting porous silica particle, in which hydroxyapatite is supported on a surface a spherical porous silica particle and inner surfaces of pores of the spherical porous silica particle, and in which the hydroxyapatite-supporting porous silica particle has a circularity of 0.760 or larger, a method for producing the hydroxyapatite-supporting porous silica particles, and a composition containing the hydroxyapatite-supporting porous silica particle.

An oral hygiene composition which relates to oral hygiene compositions. More particularly, the present disclosure relates to a toothpaste which combines stannous fluoride and tea tree oil (Melaleuca). The composition prevents tooth decay and new cavity formation on enamel and dentin, reducing dentinal hypersensitivity when used regularly. The present disclosure helps prevent gum disease (Gingivitis) bad breath and improves oral hygiene and overall health.

An oral hygiene composition which relates to oral hygiene compositions. More particularly, the present disclosure relates to a toothpaste which combines stannous fluoride and tea tree oil (Melaleuca). The composition prevents tooth decay and new cavity formation on enamel and dentin, reducing dentinal hypersensitivity when used regularly. The present disclosure helps prevent gum disease (Gingivitis) bad breath and improves oral hygiene and overall health.

A composition comprising at least one dispersed fatty phase, and at least one continuous aqueous phase, and comprising: a) at least one hydrophobic gelling agent selected from ester of dextrin and fatty acid; b) at least one amphiphilic crosslinked copolymer; c) at least one anionic terpolymer, linear or branched, of at least one monomer (1) carrying an acid function in free form, partially or totally salified by a nonionic monomer (2) selected from N,N-dimethylacrylamide and 2-hydroxyethyl acrylate, and at least one monomer (3) polyoxethylenated alkyl acrylate of formula (III) wherein in formula (III): R1 represents a hydrogen atom, R represents a linear or branched C.sub.8-C.sub.16 alkyl radical, n is an integer ranging from 1 to 10; and d) at least one hydrophobic particles chosen from hydrophobic silicas, hydrophobic cellulose, starch, talc, silicone resin powders, hollow hemispherical silicone particles, polyamide powders, hydrophobic pigments, or a mixture thereof. ##STR00001##

A composition comprising at least one dispersed fatty phase, and at least one continuous aqueous phase, and comprising: a) at least one hydrophobic gelling agent selected from ester of dextrin and fatty acid; b) at least one amphiphilic crosslinked copolymer; c) at least one anionic terpolymer, linear or branched, of at least one monomer (1) carrying an acid function in free form, partially or totally salified by a nonionic monomer (2) selected from N,N-dimethylacrylamide and 2-hydroxyethyl acrylate, and at least one monomer (3) polyoxethylenated alkyl acrylate of formula (III) wherein in formula (III): R1 represents a hydrogen atom, R represents a linear or branched C.sub.8-C.sub.16 alkyl radical, n is an integer ranging from 1 to 10; and d) at least one hydrophobic particles chosen from hydrophobic silicas, hydrophobic cellulose, starch, talc, silicone resin powders, hollow hemispherical silicone particles, polyamide powders, hydrophobic pigments, or a mixture thereof. ##STR00001##

Disclosed herein are oral care compositions comprising hydroxyapatite and a basic amino acid as well as methods of reducing or inhibiting enamel erosion, repairing enamel erosion damage, and/or increasing enamel microcrack or microscratch resistance using these compositions.