Hai, as you are in teenage group,pimples occur usually.boils occurring in face named as pimple or acne. it can occur in other parts of the body also whereever sweat and sebaceous gland present. Follow the below advise to reduce the pimples take 4- 5 litres of water every day wash your face twice or thrice day. Depends on outside work.use aloe vera face wash . applyolive oil once in a week. dont take junk foods. take more leaf vegetables and fruits. for a normal skin it will take 21 days to go off. so when you get a pimple the surrounding skin area will get dark. around two week it will take to get a fresh skin. you can use aloe vera and saffron oil to decrease the darken area created by pimples. keep your self hydrated.avoid junk foods and add more fruits and vegetables to be free from pimples. thank you hope i answered your query