resources for sustainable haarverformung with zeitabhängiger reduction of wellwirksamkeit

摘要

According to the inventive method for permanently shaping hair, an alkalinely hydrolizable compound is added to an alkaline perming agent which contains a keratin-reducing active agent and which has an initial pH value of 7.5 to 10, immediately before use. The hair is then treated with the prepared agent before and/or after it has been fixed in the desired shape. At the end of the exposure time, the hair is rinsed with water, oxidatively re-treated, re-rinsed with water, optionally styled with curlers and then dried. The inventive method is characterised in that the alkalinely hydrolizable compound chosen is such that the initial pH-value is lowered by at least 0.5 units within 5 to 30 minutes without the addition of an ester-splitting enzyme.