Hi..
Welcome to HEALTHCARE MAGIC..
As per your query acne can occur due to a few causes like hormonal changes, bacterial infection, oily skin, and inflammation..
You can wash your face using facewash containing ingredients like 
Salicylic acid or 
Benzoyl Peroxide twice a day..
Apply Azelic acid or Benzoyl Peroxide containing ointments..
You should avoid all sorts of chemical containing  cosmetic creams and for lubrication of face apply Aloevera gel as it has antibacterial and antifungal property and will not further harm your skin..
Cold compresses using ice wrapped in a thick cotton cloth will help..
Exfoliate your skin usin a mild scrub once a week..
You can follow it for atleast one month and if you see improvement continue further..
If there is no improvement 
consult a Dermatologist and after a proper evaluation he can advise you gels containing 
isotretinoin, antimicrobial ointment containing 
Clindamycin and Oral intake of antibiotics like Muricoprin and Clindamycin..
Avoid oily food and take a home cooked nutritious diet..
Drink plenty of water..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.