A new hair hack is doing the rounds on TikTok these days: upside-down hair washing. The trend simply consists of applying, then rinsing, your shampoo and conditioner with your hair over your face.

Washing your hair can sometimes seem like nothing more than a time-sucking chore. "Shampooing removes sebum or oil that normally coats the hair shaft," Dr. Brendan Camp, a dermatologist at New York’s ...

Washing hair daily gets a bad rap, but experts say if your hair is dirty, it’s perfectly fine to wash it — as long as you use the right product.