In my opinion we should just stay away from applying harsh chemicals on our skin. dust and polution also causes pimples and dull skin but anyways whatever is the reason of your pimple u should use these tips.
Always remove makeup and wash your face.
Here I m going to tell u about a face pack that would minimize your pimples , acnes and scars.
fuller’s earth-One or two tablespoon
Neem leaves-10to 15 fresh
Lemon juice-one tablespoon
Put them into mixer or grinder add a little water to make a nice and thick paste. Apply it twice a week on your face .let it dry .and wash it.its really beneficial also make our skin germ free.