A few tips from several users ... A top-rated crowd favorite, Amika’s purple shampoo can’t be beat when it comes to both banishing brassiness and boosting hydration (key ingredients include ...

Buttercream uses butter as a crucial ingredient, so a yellow-hued frosting can be unavoidable. If you want a whiter frosting, ...

Color-depositing shampoos add specific pigments (either purple, blue or green) onto the hair shaft to maintain your desired color. Based on color theory, blondes should use purple shampoos ...

Andie MacDowell's secret for maintaining her vibrant and voluminous gray locks is in this under-$20 L'Oréal Paris purple ...

What you really need? A purple shampoo. Yep, unlike darker brown hair colours, blonde hair has an annoying tendency to fade and become brassy. Thankfully a toning purple shampoo can help prevent this.