Pimples is a common problem of your age. It occur due to blockage of oil from oil glands in the skin and its under hormonal influence. Certain factors which may aggravate pimples are stress, oil based occlusive cosmetics and food items like milk and other dairy products. Please visit a qualified dermatologist for proper treatment and be patient till you see results as treatment is individualised. Stay away from OTC products as they may contain steroids. Dr Vijay Adhe Eternis skin & hair Clinic Pune