Abstract
In these days, semi-permanent hair-dye products are popular in Japan. Because they are easy to treat hair and change the color. They consist of Acid Dye, Organic Acid and Benzyl Alcohol in general. But carrier ingredients like a benzyl alcohol cause hair damage and unstable emulsion system. So it's very difficult to develop emulsified semi-permanent hair-dyee products. We have studied emusifing method, surfactant and conditioner on the products including carrier ingredients. Then, we have some informations about stable semi-permanent hair-dye in emulsion system.
