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A - Human Necessities – 61 – K

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167/302, 8/6

A61K 8/49 (2006.01) A61Q 5/10 (2006.01)

Patent

CA 1104933

PRECIS L'invention est relative à des solutions de colorants. Ces solutions comprennent au moins un dihydroxy indole de formule: Image dans laquelle R1 et R2 désignent independemment l'un de l'autre hydrogène ou méthyle et les sels cosmétiquement acceptables, dans un solvant anhydre choisi parmi l'alcool éthylique, isopropylique et tertiobutylique, les éthers monométhylique, monéthylique et monobutylique de l'ethylène glycol et l'acetate du monoéthyl éther de l'ethylène glycol. Les solutions sont utilisables pour la préparation de compositions tinctoriales pour cheveux.

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