Drinking a lot of water goes a long way towards benefiting your body and skin in many ways. While water might not be a cure all to your pimple problems, a steady flow of water will help you fight against breakouts. Skin cells require water to function properly. Dehydration causes damage. Also, drinking water, helps prevent the intake of toxic beverages that causes acne like milk and other fats and oil beverages. . By drinking 10-12 glasses of water per day, you can flush most, if not all, impurities out of your body.