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.

You probably wash your hair just like everyone else: first shampoo, then conditioner. This, of course, is completely normal and traditionally correct. After all, we all know that conditioner ...

Qatar’s new technology helps players and fans beat the country’s deadly heat—but it may not be cool for the environment ...