Besan and milk pack works wonders. I have personally benefitted from this pack. Another option is using rosewater daily after face wash. It works as an excellent toner.

Pimples can occur due to the extra production of sebum that results in clogging the pores. Washing your face thrice a day with a gentle cleanser can be a great way to keep the oil at bay and prevent pimples.

I think the one and the most solid advice I can give you all is, if your acne has been persistent and has been causing you a lot of stress & worry, please consider visiting a dermatologist. Home remedies, over the counter medications etc which may have worked for others might or might not work for you. Your skin, genetics, nutrition are unique to you and the solution to your pimples will be unique as well. So, visit your dermatologist and figure out the root cause of your acne to treat it effectively.