Let’s start with what purpleshampooactually is.
Think of it as your at-home toner that helps to beat brass."
How often should you use purple shampoo?

To achieve a richer blonde and eliminate unwanted color, Doss adds a toner.
Purple shampoo is your DIY at-home toner.
You should use it in between hair color appointments to keep your color looking healthy and fresh.

Doss recommends color-treated blondeswash their hairwith purple shampoo no more than once a week.
“Purple shampoo is not just for color-treated blondes.
So should we believe the hype about purple shampoo?
Guess we’ll have to try it for ourselves.