One thing to note, blue shampoo isn’t meant to be used daily. Lake Orion, Michigan-based colorist Grace Rogers, recommends using it once a week or as needed. “Start off with one wash ...

An InStyle writer with color-treated blonde hair reviews the Davines Heart of Glass Silkening Shampoo, a blue toning shampoo ...

meaning there's stuff to wash out), and those darker hues can get warmer (and brassier!) as they fade. Enter blue shampoo. Similar to purple shampoos, which keep blonde hair bright, blue shampoos ...

or it could mean that the shampoo you’re using to wash regularly is stripping your toner off.” In my case, twice a month has been a perfect balance. Davines’ blue shampoo and conditioner ...

Using the best blue shampoo can help you get the most out of your dyed or natural colour when washing. (Did you know there's a way to properly wash your hair?!) Yes, really. Although definitely ...