The importance of cosmetic products, especially for hair treatment, has reached an enormous dimension in the last years. The request for improved formulations and the complexity of the hair structure lead to a competitive development of hair care products.
The understanding and control of different hair treatments such as the application of shampoo and conditioner, bleaching or coloration, is increasingly gaining importance. Besides the different behavior of virgin hair such as asian or caucasian, the different acceptance of hair care products due to a permanent modification of the hair structure by bleaching introduces another challenging task for the cosmetician.
Streaming potential measurements show the effect of the bleaching agent on the human hair and correlate with the degree of bleaching.
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