Usage Method: 1. Add appropriate amount of this product in the shampoo (100ml shampoo plus 3ml). Stir the mixed shampoo. As usual shampoo method can be. 2. Can be directly dripping 2-3ml in the palm, evenly applied to the hair. 3. Used before and after perm to repair hair damage caused by heat. 4. A few drops of the product can be mixed evenly with the hair mask, it will give you double curing.