I have got many marks on my ckeeks because of pimples and pus. Whenever one pus goes another comes. Most of the time its pus only. What should I do?

Benzoyl peroxide gel. The easiest treatment is to start with over the counter benzoyl peroxide gel. Spot this on to the individual pimples each night. However, it sounds like your acne is very active. You should see your dermatologist as you need stronger medicines. I also like to add the acleara acne laser to treat acne like yours.