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.

Although the shampoo and conditioner reduced brassiness to an extent, I found that the build-up of the purple pigment made it a product that I wouldn't want to use every wash. Instead, I'm keeping ...

In order to properly select the best purple shampoo ... you can also maintain and see sustained results over time by using a purple shampoo with less pigment. How often should you use it?

Purple shampoo works through the principles of color wheel theory. We can use a cool color against a warm color to get a color that doesn't interfere with the target color. And we can see the that ...