Sunday, June 14, 2009
Ammonia is used in permanent (oxidative) haircolor. When the permanent haircolor and the developers come together, the action of ammonia begins. Like all alkaline, the ammonia has the tendency to separate the cuticle and allows the permanent haircolor to penetrate the cortex of the hair. The ammonia has an effect on the sulfur bonds of the hair. If the ammonia is too harsh, the hair will lose more of the sulfur bonds than necessary. It will cause the hair to harden, lose weight and diameter.