Dyeing hair is one of the most common means of modern makeup. It uses plants (such as avocado, henna, Polygonum multiflorum, etc. ) or chemical pigments to dye the color of hair into the desired color.
People who have dyed their hair within three months had better not dye it again. Because the hair dye contains a decoloring agent, this ingredient is harmful to the hair scales, and the damaged hair scales will become fragile and easily broken. If you dye your hair repeatedly within three months, the damaged hair scales will be damaged again and cannot be recovered. As time goes on, the health of hair is worrying.