Bentonite clay (montmorillonite) is a mudlike substance derived from volcanic ash. It’s sometimes used in the personal care industry as a face mask. Bentonite clay can also be used for hair as a ...

Rhassoul clay is a type of clay that some people use as a cosmetic product for their skin and hair. It’s a brown clay only found in a valley in the Atlas mountains of Morocco. The term “rhassoul” ...

THERE USED to be a time when guys chose their haircut—and the accompanying hair product—and never deviated from that formula. And for many of us, it’s still pretty much like that. If it ain’t broke, ...