What Is Pimple Pus. Pimple pus is made from sebum oil that gets trapped in your pores along with a combination of dead skin cells debris such as makeup and bacteria. The problem is that boils or infections can look and act similar to pimples.

Sometimes a brownish spot can be seen in the middle of the blemishs head. Blackheads and whiteheads are both clogged with the same thing. So thats generally harmless.
It starts out as a firm red painful lump under the skins surface.
A smattering of blackheads. It starts out as a firm red painful lump under the skins surface. A smattering of blackheads. Pus is a whitish-yellow yellow or brown-yellow protein-rich fluid called liquor puris that accumulates at the site of an infection.