Mayo Clinic Minute: How often should you wash your hair?

To shampoo or not to shampoo. That might be your question each time you head into the shower.

Dr. Dawn Davis, a Mayo Clinic dermatologist, says when it comes to the scalp and the hair, there's a new trend online where shampooing less is preferred. Here's what she would like you to consider when it comes time to wash your hair.
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