I am a huge fan of deep cleansing--whether it's body, face, hair. I love the idea of stripping away the build up and starting fresh.
I steam my face over boiling water, apply a purifying mask. I use a mineral salt purifying body cleanser every once in a while. And I use a clarifying shampoo once a week.
Not only do you strip away the product build up, but it's the perfect time to apply a deep conditioner...penetrates more easily on that clean hair. It used to be that the clarifying shampoos were too harsh for color treated hair, but gone are those days.
Here are a couple of my favorites: