... at the process of dyeing,2. This hair dye contains very little ammonia, which can greatly reduce ... hair, effectively protect hair quality.3. This hair dye contains many kinds of compound haircare ingredient, which ... With fragrant smell at the process of dyeing, the dye color last long , make your hair glossy, elastic ... do not scratch scalp.2). Mix the hair dye with dioxygen cream at the propotion of 1 : ...