Biotin supports several important functions in the body, but do you need to take it as a supplement? Experts weigh in.

Looking for the best biotin supplement? We reviewed nine RD-approved options that support hair, skin, and nails. See our top ...

The recommended daily dose of biotin varies depending on age ... “Two common signs of a biotin deficiency are hair loss and brittle nails,” says Nazanin Saedi, MD, a board-certified dermatologist and ...