Okay, so I'm 16 and have been fighting acne for about 2 years now. I get all types of acne!! On my forehead I get anywhere from little under-the-surface blackhead-ish pimples(little ones that don't get red or swollen) to the giant cystic things. I even get those all over my chin in addition to little pimples on my cheeks.
Recently I have found a method that works really well!! All you need is cinnamon, nutmeg (optional), honey, and apple cider vinegar( found at your local food store right next to the white vinegar). I don't really have a set ratio but I mix all of the ingredients to make a liquidy paste. Put all over the affected areas and let sit for at least 20 mins. You can keep it on overnight if you wish, but I don't like to do that. Makes your pillow messy. Afterwords, just RINSE it off. Don't use soap. And then moistureize. Use daily and after about 3 days my skin was practically clear!!! Good Luck!! :)