I have small bumps on face. What to do?

Acne. Tretinoin (retin-a, atralin, renova) is the mainstay of treatment for whiteheads and blackheads. Tretinoin is a derivative of vitamin a and works by increasing cell turnover and reducing the "stickiness" of the sloughed cells. It helps expel the plugged material returning the pore to normal. Tretinoin can be irritating, so specific instructions on how to use it can be found here.