I believe that one of the most effective acne treatments is Vitamin C. I do this by applying it on acne. When a pimple appears, my skin reacts by producing more acid. This will prevent acne in the future. This can be useful for all acne prone skin types, including combination and acne. If you suffer from acne and it's not treated, you may still have acne, but it may be more noticeable or even go away. This is a very common occurrence, and it could be from other factors like being in a relationship or being overweight. Vitamin C is important for the immune system. When there is a low level of vitamin C in the body, it can cause many problems. You may have high blood pressure and other health issues. Also, low levels of vitamin C can contribute to many types of cancer. People with high vitamin C levels also may be at increased risk for obesity. Vitamin D is very important for your health. Vitamin D plays a vital role in metabolism, energy production, and cell division. You need a lot of vitamin D in order to maintain healthy bones, teeth, and skin, as well as for your metabolism.