Sweat travels out of these follicles, as does an oily substance called sebum.

Blackheads form below the skin's surface, when oil, also called sebum, reacts with air in a partially clogged pore.

The scalp produces a natural oil called sebum.

The scalp contains a natural oil called sebum, which helps keep the skin lubricated.

Part of this protection is an oil produced by your skin called sebum.

Inside your hair follicles, there are small glands producing oil called sebum.

For example, a fatty substance called sebum empties into the follicles.

To do this, your skin produces a type of oil called sebum.

Oil glands in your body produce a compound called sebum.

They also secrete a natural lubricant called sebum, which is supposed to moisturize and protect our skin.