To get rid of excess sebum wash your skin regularly and use topical treatments and exfoliate the skin.
Wash the face and skin with a gentle and non irritating cleanser twice a day and avoid use of harsh scrubs which can irritate the skin and trigger oil production and excess sebum.
Also use a noncomedogenic cleanser that will not cause acne.
Exfoliate the skin every couple of days which can remove dead skin cells that can trap in sebum and use a gentle exfoliating wash.
Use green tea emulsions, benzoyl peroxide or salicylic acid as topical treatments and consider using a toner that contains lactic acid, salicylic acid or glycolic acid that can exfoliate and balance the skin.
Using under eye care products like retinol under eye gel can keep pores clear as well.
Apply a lightweight and oil free noncomedogenic moisturizer and protect the skin using a noncomedogenic sunscreen for oily skin that has a SPF 30.
You can also steam your face and unclog pores and loosen up sebum and eliminate any bacteria.
Also consider eating a low glycemic diet like fresh vegetables and fresh foods.
Sebum is an oily substance which is produced by your sebaceous glands in your skin an it plays a role in protecting the skin and moisturizing the skin.
Although excessive production of sebum on the skin can lead to skin issues including acne breakouts.
The symptoms of excess sebum production are greasy hair, acne breakouts, blackheads and whiteheads, enlarged pores and oily and shiny skin.