Hai, Follow the below advise to reduce the acne. take 4- 5 liters of water every day wash your face twice or thrice day. Depends on outside work.use aloe vera face wash . apply Multani mitti powder mixed with butter milk once in a week. dont take junk foods. take more leaf vegetables and fruits. u can also take tripala juice (Himalaya drugs) -10 ml twice a day. 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. To gain weight eat healthy nutritive food. First eat protein nourished foods like Almond,cashew,channa,soyabean,peanut in your daily food intake. Add jaggery,black gram,and dal prepared with ghee. take diary product like milk,yogurt,chesse,butter etc. Add banana and tuber vegetables. Prefer meat and sea foods if you are a non vegetarian This will nourish in a healthy way and gain weight. Regards Dr.S.Senthilnathan