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, ...

Cowashing is using conditioner to wash the hair instead of shampoo. Some people find cowashing helps ease hair dryness and reduce breakage. However, it can also lead to oily residue buildup.

Hair wash days—though essential—can be a hassle. They refuse to align with your social plans. You schedule your workouts around them. And even under ideal circumstances, getting your head wet and ...