Word! Sebum  Word! Sebum   (En español: Sebo)  Say: see-bum  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.  ©
Intermountain Healthcare