Operation Method: 1 operation as usual shampoo as simple, put on gloves hands to wet the head. 2 wipe the water with a towel, put the product in two bottles by 1:1 ratio into the hand slightly stir, long hair and white hair to use more, short hair can use less. 3 on the hair repeatedly knead, must let the product stick to the root of each hair, knead can be fast or slow, tired can be a little rest, in short, keep on the head around the rub, especially the root, adhere to 7-10 minutes of rubbing can be flushed, you can see is a black hair.