Oily hair

Oily hair is a hair type that is characterized by excessive oil production. This oil, called sebum, is produced by the sebaceous glands in the scalp. Sebum helps to protect and moisturize the hair, but too much sebum can make the hair look and feel greasy.

Oily hair can be caused by a number of factors, including genetics, hormones, diet, and stress. People with oily hair may find that their hair gets greasy and dirty quickly, and they may need to wash it more often than people with other hair types.