Temporary Hair Dyes or Color Rinses

For a more complete discussion of the dyeing of wool fiber, see the book Wool Dyeing edited by D. M. Lewis [44]. 

Temporary hair dye products frequently contain thickeners, a surfactant, sometimes a hair-setting polymer, and a buffer or acid such as tartaric, acetic, or citric to provide an acid medium for application of the dyes to the hair. To make the hair rinses described in Table 6-11, first hydrate the hydroxyethylcellulose (0.7 g) with 49 g of water by stirring, then add the neodol and the nonoxynol. Add the remaining water followed by the buffer, and then slowly dissolve the dyes in the product with stirring. Finally, add the cetrimonium chloride and stir until it is completely dissolved. 

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Semipermanent dyes refer to formulations that dye the hair without the use of hydrogen peroxide to a color that only persists for 4-6 shampooings. The objective of temporary hair dyes or color rinses is to provide color that is removed after the first shampooing process. 

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