: fatty lubricant matter secreted by sebaceous glands of the skin
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Among its 14 plant oils are argan kernel and rice bran, which regulate sebum production and loosen dead skin cells, respectively—and, together, leave your pores looking significantly smaller and your skin significantly smoother.—Sophia Panych, Allure, 16 Sep. 2025 This blemish-banishing formula includes witch hazel, algae extract, and grape seed extract, plus vitamin E to keep pores looking tight, rein in excess sebum, and shield skin from free radicals.—Esme Benjamin, PEOPLE, 4 Sep. 2025 The researchers also noted a significant reduction in sebum— an oily substance that contributes to acne—of more than 40 percent by day seven.—Hannah Millington, MSNBC Newsweek, 2 Sep. 2025 This medical-grade formula is no exception, gently removing any excess sebum or grime that your cleanser may have missed.—Deanna Pai, Vogue, 24 Aug. 2025 See All Example Sentences for sebum
: lubricant matter that is secreted by sebaceous glands of the skin and is composed of various lipids (such as triglycerides, fatty acids, and squalene)
Androgens, such as testosterone, play a role in the development and exacerbation of acne by stimulating the production of sebum.—Isabella Tan, Dermatology Times
… the resulting production of sebum from sebaceous glands aids in lubrication, heat insulation, … antimicrobial activity, and delivery of fat-soluble antioxidants to the skin surface.—Dustin H. Marks, American Journal of Clinical Dermatology
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