You can't see it, but it's there. Sebum is your skin's natural oil, and it keeps your skin soft and makes it a bit waterproof. Ever get wrinkly fingers in the tub? Although your fingers may look shriveled like raisins, they aren't really shriveled – they're actually waterlogged because the sebum has been washed away.
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
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