For the ones that have surfaced.

Hydrocolloid is a gel that absorbs fluid. Stick one on a whitehead or a spot that has come to a head, and it pulls the fluid out, seals the skin off from your fingers, and heals without scabbing — faster, and with less of a scar than picking or leaving it alone. The little white dot when you peel the patch off is the stuff that came out.

Thin enough to wear under makeup. A single pack to try, or the value pack once you know you will keep reaching for them.