Review Of How Long Leave Purple Shampoo On Dry Hair Ideas. Does purple shampoo make your hair lighter? Although purple shampoo may create an illusion of darker hair for purple pigment buildup, it does not physically lighten or darken hair.

Web however, the timing of when to use purple shampoo after a color treatment depends on a few factors. Leaving the shampoo on your hair too long will leave you with purple locks. What should i do if i leave purple shampoo in too long?