Purple shampoo is a type of color-correcting shampoo that is used to neutralize unwanted yellow or brassy tones in hair. It is typically used on blonde or gray hair, but it can also be used on black hair to add a cool, ashy tone. However, it is important to note that purple shampoo will not lighten black hair.
Purple shampoo works by depositing purple pigments into the hair, which counteract the yellow or brassy tones. This can help to create a more even, natural-looking hair color. Purple shampoo is also gentle on the hair, and it can help to improve the overall condition of the hair.
