This one can be used เปลี่ยนสีผม in normal person. right? Or can it be used only for gray hair? How to use it, how many minutes should I leave it in the pool?
1. In case of wanting to get Coke color (For example, of Phum Prueksa) which color should be used? 2. How many minutes do you leave the pool? 3. After the recipe is finished, how do you use it? how much