While blue shampoo is recommended for color-treated brown hair, natural brunettes can also benefit from its unique formula. "A natural brunette can use a blue shampoo even if their hair isn't ...
That’s why I would advise most people with treated hair to avoid them as they can cause color to fade faster. It’s worth noting that I’ve included a few shampoos that do use them ...
7don MSN
The best shampoos for gray hair are actually purple shampoos. Here’s what experts want you to know about using one, plus we rounded up the best options.
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