Sebaceous glands secrete an oily substance called sebum, which under normal circumstances gives your hair its natural shine. Oily hair is the result of these glands producing large amounts of oil, there are several reasons why excess oil is produced which can range from hormones during puberty or pregnancy or it can be genetic. There are some causes that are can be easily controlled. Improper hair care, diet and lifestyle are also factors that can cause excessive oil production. It can be challenging to find products for oily hair but we have created shampoo bars and conditioner bars specifically for oily hair.