THANKS FOR CHOOSING HCM,
yes when you use a scrub ,the pores get opened and the black or white heads whatever comes out leaving the pore open...
when you are exposed to dust etc.... the dirt particles result in clogging of pores and thus acne
and when you apply a moisturiser ,it makes more dirt to stick to your face
so see that you dont scrub your face daily
twice in a week is enough,otherwise you may reveal the most sensitive layer on the face which turns dark when exposed to sunlight and pollution
after using the scrub ,use a little amount of astringent
on cotton to close the pores...
then you can proceed with moisturiser
hope i answered your query
feel free to contact me for further queries