Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Plant extract of undetermined constitution
Patent
1993-09-10
1995-05-30
Page, Thurman N.
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Plant extract of undetermined constitution
424 706, 424 59, 4241951, 424 701, 514938, A61K 706, A61K 3578
Patent
active
054198968
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to an aqueous hair and body treatment composition containing a combination of (a) hinokitiol and (b) heliotropin.
As a rule, hair and body treatment compositions contain a preservative which should effectively protect the composition from infection by microorganisms, as well as fragrances to give a pleasant aroma to the compositions.
When preservatives are used in hair and body treatment compositions, conflicting demands are made on them. On the one hand, they should be well tolerated in physiological and dermatological respects. On the other hand, they should have a good germ inhibiting or even germ killing action. Usually, the two demands can be reconciled only with difficulty.
Preservatives commonly used in hair and body treatment compositions are e.g. formaldehyde (a), 5-bromo-5-nitro-1,3-dioxane (b), p-hydroxybenzoic acid ester (c), 2,4,4'-trichloro-2'-hydroxydiphenyl ether (d), 5-chloro-2-methyl-3-isothiazolone (e), 2-methyl-3-isothiazolone (f), and 2-bromo-2-nitropropane-1,3-diol (g).
Certain preservatives such as formaldehyde and 2-methyl-3-isothiazolone are currently suspected of being insufficiently tolerated. Aldehydes and phenols having a preservative action are known to react with proteins or to interact with them in a denaturing manner. Aldehydes carry the additional risk of sensitization.
Another risk which argues against the use of such preservatives is the danger of nitrosamine formation. In preservatives containing nitro groups ((b) + (g)), this risk is particularly high when they are used together with other nitrogen-containing components of the cosmetic composition.
For this reason, an increasing number of consumers show a desire for hair and body treatment compositions which do not contain the preservatives mentioned above and which have, in addition, a pleasant and stable aroma.
Repeated attempts have already been made to replace the conventional preservatives with new substances with improved physiological tolerability, but none of the new compounds were able to satisfy all requirements.
For example, in the present Applicant's EP-OS 0 346 582 it was suggested to use cosmetic alcohols, e.g. ethanol, propanol or isopropanol, for preserving anionic hair care emulsions. However, a disadvantage consists in that at least 9 percent by weight alcohol is required for sufficient preservation, which can impair the stability of the emulsion.
It is also known from the literature in the field, e.g. B. Ziolkowsky, "Konservierung kosmetischer Mittel [Preservation of Cosmetic Compositions]", in Seifen-Ol-Fette-Wachse [Soaps, Oils, Fats and Waxes] 112 (10), pages 355 to 364, to use hinokitiol for preserving cosmetic compositions. However, it is noted that hinokitiol is also not suitable in higher concentrations for preserving oil-in-water emulsions. In view of the high price of hinokitiol, the use of higher concentrations also appears impractical on economic grounds.
Heliotropin, one of the principle substituents of elderberry fragrance, is likewise poorly suited for preserving cosmetic compositions, since more than 0.5 percent by weight heliotropin is required for sufficient preservation, which results in a serious impairment of the aroma of the cosmetic composition.
SUMMARY OF THE INVENTION
Therefore, it is an object of the present invention to provide a hair and body care composition containing a combination of active ingredients which possesses excellent germ inhibiting or germ killing action, is well tolerated physiologically, and moreover can be used alone or in combination with additional fragrances as fragrant components.
Surprisingly, it has now been found that this problem is solved in an outstanding manner by an aqueous hair and body treatment composition containing a combination of hinokitiol and heliotropin in quantities which by themselves would not have a sufficient preservative action.
The subject matter of the present invention is therefore an aqueous hair and body treatment composition which is characterized in that it contains a
REFERENCES:
patent: 4560554 (1985-12-01), Kubo
patent: 4675395 (1987-06-01), Fukazawa
patent: 4814322 (1989-03-01), Exner
patent: 5268174 (1993-12-01), Sakuma
"Konservierung Kosmetischer Mittel", Bernd Ziolowskyk, Seifen-O1-Fette-Wachse-112, No. 10, 1986, pp. 355-364.
Zentralblatt fur Bakteriologie, Mikrobiologie und Hygenie, vol. 172, No. 6, 1981, pp. 508-519, D. Rehn, et al.
Bimczok Rudolf
Stiehm Thomas
Gardner Sally
Page Thurman N.
Striker Michael J.
Wella Aktiengesellschaft
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