Nick Blackmer is a librarian, fact-checker, and researcher with more than 20 years of experience in consumer-facing health and wellness content. Double shampooing is a hair care technique where you ...

Shampoo is a cleansing agent. It contains ingredients called surfactants and detergents that help remove oil, sweat, dirt, product buildup, and environmental pollutants from your hair. Conditioners, ...

Chances are washing your hair isn’t something you’ve given a ton of thought to over the years. Sure, maybe you did a little research when picking your shampoo and conditioner. But you probably didn’t ...