How to use: divide the hair into 6 parts. Apply the product to the hair with a brush with comb quickly and evenly. Avoid direct contact with the scalp. Comb the hair gently and carefully. Wrap the hair with a plastic film. Leave to work for 5 to 60 minutes (depending on the hair structure), perform knot test every 2-10 minutes (refer to the table in the instructions). At the end, rinse the hair with lukewarm water for 5-10 minutes and dry with a towel.