Sebum buildup on the scalp can lead to problems, ... If your hair leans oily or dry, it could be due to an excess or deficiency of these lipids. While sebum is your hair's built-in hydrator, ...

When sebum production is insufficient or when the oils cannot distribute properly along the hair length, conditioning products must compensate for this natural deficiency.

Vitamin A is necessary for producing sebum, ... Deficiency in B12 can cause hair thinning and poor hair health, (along with many other conditions) especially in vegetarians and vegans,.

Sebum is an oily, waxy substance produced by your body’s sebaceous glands. If you have oily skin or hair, your body may be producing an excess amount of sebum and other fat-like molecules, and ...