It may sound strange to put henna (otherwise known as a green powder that smells like freshly cut grass) on your hair for several minutes, let alone a few hours, but there’s a method to this madness.

Fresh off launching a new Mane product line, the Ouai founder demonstrates hairstyles for all hair types and her go-to products — shop her recommendations and more. By Danielle Directo-Meston ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Hair powder is definitely one of the more under-utilized hair styling products, but if you talk to hair ...