Correct use of shampoo for gray hair: The method of massaging the scalp is also important

In order to use hair dye shampoo effectively, it is important to use it properly. In particular, scalp massage is effective in promoting blood circulation in the scalp and regulating the scalp environment. Proper scalp massage promotes shampoo penetration and supports the health of your hair and scalp. When performing a massage, take an appropriate amount of shampoo, lather it well, and then...