Oily skin happens when the sebaceous glands in the skin make too much sebum. Sebum is the waxy, oily substance that protects and hydrates the skin. However, too much sebum can lead to oily skin, clogged pores, and acne.

• Genetics may play a role in how oily the skin becomes.

• Hormone changes.

• High-stress levels may also increase the production of oily sebum by the body.

Treatment