| abstract |
PURPOSE: To obtain the subject safe hair dyeing assistant for acid dyes containing one or more selected from squalene, squalane and partially hydro lyzed squalene as the essential components, having a low dermatopathy, provid ing a natural feeling and capable of improving the degree of dyeing. n CONSTITUTION: One or more selected from squalene, squalane and partially hydrolyzed squalene are emulsified using one selected from a nonionic surfactant, a cationic surfactant and an amphoteric surfactant. An organic carboxylic acid (e.g. suocinic acid) is preferably added thereto in an amount of 0.01-0.5wt.% and the pH value of the resultant emulsified composition is adjusted to ≥3.0 and <7.0. A solvent (e.g. alcohol or liquid paraffin) is further added thereto as necessary to obtain the objective material. The above-mentioned surfactant is used in an amount of 1-200 pts.wt. based on 100 pts.wt. the above-mentioned one selected from squalene, etc. The resultant objective hair dye assistant can be used in a form of aqueous solution, emulsion, cream, paste, gel, etc. n COPYRIGHT: (C)1991,JPO&Japio |