it appears that you have mild acne
it can be resolved by just topical anti-acne preparations.
but which preparation will be best suitable for you can be better decided by a dermat
also if you want to get rid of them for a long duration with excellent results please do not stop the treatment midway. the duration of treatment may last for 6-9 months
that is the time taken by topical retinoids
to get rid of the micro-comedone population of the skin.