Hair cosmetic compositions

Abstract

A hair cosmetic formulation, comprises (A) a fragrance ingredient comprising cis-3-hexenol; and (B) monoethanolamine.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation-in-part of copending application Ser. No. 09 / 956,888 filed Sep. 21, 2001.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to hair cosmetic compositions that contain cis-3-hexenol and monoethanolamine in which the cis-3-hexenol not only masks the unpleasant odor of monoethanolamine, but also the mixture of cis-3-hexanol and monoethanolamine imparts a desirable fragrance to the composition. [0004] 2. Description of the Background [0005] In hair dye or coloring formulations (hereinafter collectively called “hair coloring formulations”), alkaline agents such as ammonia and monoethanolamine are frequently incorporated therein. The ammonia and amine smells, which these compositions inherently have, have remained unsolved as a serious problem for both those applying the hair coloring formulations and those treated with the formulations. In shampoos, conditioner...

AI Technical Summary

Benefits of technology

[0011] The fragrance ingredient (A) of the present invention contains cis-3-hexenol. As mentioned above, cis 3-hexenol is known as “leaf alcohol” and is a fragrance which is useful for imparting a grassy smell to a formulation containing it. It was, however, not known that this compound is able to mask the odor of monoethanolamine which may be in a composition. To achieve the effective masking and fragrance effect of the invention, it is preferred to add cis-3-hexenol to a composition in an amount of 0.1 to 50 wt. % (hereinafter indicated simply by “%”), preferably from 1 to 50 wt %, especially from 1 to 30% in ingredient (A).

[0012] The ingredient (A) may preferably contain, in addition to cis-3-hexenol, one or more substances selected from the group consisting of cis-3-hexenol esters such as cis-3-hexenyl acetate, cis-3-hexenyl formate, cis-3-hexenyl propionate and cis-3-hexenyl salicylate, alcohol C-6, trans-2-hexenol, dimethol (2,6-dimethyl-2-heptanol), dihydromyrcenol (2,6-dimethyl-7-octen-2-ol), citronellol (3,7-dimethyl-6-octen-1-ol), geraniol (3,7-dimethyl-cis-2,6-octadien-1-ol), linalool (3,7-dimethyl-1,6-octadien-3-ol), Magnol™, Sandalmysore Core™ [2-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-4-penten-2-ol, product of Kao S.A.], eugenol [2-methoxy-4-(1-propenyl)-phenol], p-cresol, Herbac™ (3,3-dimethylcyclohexyl methyl ketone), Koavone™ (acetyl diisoamylene), γ-methyl ionone [5-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-methyl-3-buten-2-one], 1-menthone (o-menthan-3-one), Liffarome™ (cis-3-hexenyl methyl carbonate), Manzanate™ (ethyl 2-methylpentanoate, product of Quest Int'l U.K. Ltd.), Fruitate™ [ethyl tricyclo[5.2.1.0]decan-2-ylcarboxylate], o-t-B.C.H.A.(o-t-butylcyclohexyl acetate), p-cresyl acetate, 1,8-cineole, Anethole™, estragol (methyl chavicol), rose oxide [4-methyl-2-(2-methyl-1-propenyl)-tetrahydropyrate] and limonene [p-mentha-1,4(8)-diene]. The ingredient (A) may further contain a solvent as a diluent. Suitable such solvents include dipropylene glycol, triethyl citrate and ethanol. From the standpoint of the emission of a preferred fragrance, the hair cosmetic composition of the present invention can preferably contain ingredient (A) in an amount ranging from 0.1 to 1.0%, especially from 0.3 to 0.8%, based on the weight of the composition.

[0013] Ingredient (B) of the present hair cosmetic composition is monoethanolamine which is commonly used as an alkaline agent in oxidation hair colors and hair bleaches. The hair cosmetic composition preferably contains monoethanolamine in an amount of 0 to 20 wt %, especially from 0.1 to 10 wt %, when the hair cosmetic composition is in a form ready for application onto hair (in other words, in a mixed form).

[0014] Illustrative hair cosmetic compositions of the present invention include oxidation hair coloring formulations, hair bleaching formulations, acid-dye-based hair coloring formulations, basic-dye-based hair coloring formulations, shampoos, conditioners and other hair care products, all of whose ammonia odor, amine odor and / or solvent odor is as described above. Of these, oxidation coloring formulations are particularly preferred. In the case of an oxidation coloring, an oxidation dye intermediate, for example, a color-developing substance and a coupling agent are added. Suitable examples of the color-developing substance include p-phenylenediamines, 2,5-diaminopyridines, p-aminophenols, o-aminophenols, o-phenylenediamines, and 4,5-aminopyrazoles. Suitable examples of the coupling agent, on the other hand, include various m-phenylenediamines, m-aminophenols, m-hydroxybenzenes, hydroxyindoles, naphthols, and phenols. In addition, a direct dye or the like can also be incorporated in the composition.

[0015] When an oxidation dye intermediate is incorporated in a hair cosmetic composition of the present invention, oxidative coupling is induced with oxygen in the air, an enzyme or the like to color the hair or the like. To induce this oxidative coupling, addition of a chemical oxidizing agent is more preferred. Illustrative of the chemical oxidizing agents include hydrogen peroxide, hydrogen peroxide solution, e.g., 35%, urea peroxide, alkali metal bromates, and alkali metal peracid salts, such as perbromates, persulfates or perborates, with hydrogen peroxide being particularly preferred.

[0016] In the hair cosmetic composition of the present invention, viscosity / gel strength modifiers, oils and fats, waxes, hydrocarbons, polyhydric alcohols, amides, silicone derivatives, cationic surfactants, anionic surfactants, amphoteric surfactants, nonionic surfactants, nonionic high-molecular substances, cationic high-molecular substances, anionic high-molecular substances, amphoteric high-molecular substances, protein derivatives and amino acids, preservatives, chelating agents, stabilizers, oxidation inhibitors, plant extracts, crude drug extracts, vitamins, color additives, fragrances, pigments, ultraviolet absorbers and the like can be incorporated therein as additives.

Problems solved by technology

The ammonia and amine smells, which these compositions inherently have, have remained unsolved as a serious problem for both those applying the hair coloring formulations and those treated with the formulations.

In shampoos, conditioners and other hair care products containing ammonia or monoethanolamine, there also exists the same problem of smells as mentioned above.

However, this penetration promoter also imparts a solvent smell to the compositions.