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

It was black; it leaked an oily substance on to the table.

Starfire then discovers an "oily substance" which attacks her.

Then distilled water is used to wash away the soap solution of the oily substance.

The cassette was slippery, whether from water or some oily substance from the cleaners she didn't know.

The glands are used especially by males to produce an oily substance with a strong smell called temporin.

He also used oily substances called Adhan for medication and beautification.

The vitreous gel is replaced with a salt solution or sometimes an oily substance.

On that spot, the affidavit added, investigators found an oily substance which smelled like fuel oil.

There was a strong smell of tar, and the dog's hair was streaked with some oily substance.