No, use it by friction. According to the report of Popular Health Network, washing hair with Jiang Shui can't cure white hair, and it has no conditioning effect on white hair. Shampooing with Jiang Shui can mainly promote hair growth, because ginger contains gingerol, which can stimulate hair follicles, provide sufficient nutrition for hair follicles and promote hair growth. The method is as follows: Use the ginger grass shampoo correctly according to the instructions, pour a proper amount of shampoo into the palm of your hand, rub out foam, apply it to your hair, gently massage your scalp for 2 to 3 minutes, and then rinse it off with clear water.