Colored hair (specifically blonde) can turn a brassy tone thanks to things like the sun, chlorine, the ocean, and more. This causes hair to be stripped of cool tones and replaced with brassy tones (a.k.a tones you don’t want). If that happens, you need a purple shampoo. First, the answer is no, it won’t turn your hair purple. This shampoo can save you money by making your blonde strands remain blonde and can keep your hair healthy. However, before you order some purple shampoo, read on to find out three things you should remember as you shop.