Certain vitamins and minerals like Vitamin A, C, E, zinc and Omega 3 can help the appearance of skin and reduce the acne outbreaks. Consult a natural health care practitioner to determine an accurate dosage for your teenager. These vitamins and minerals can also be found in foods. Try incorporating foods that carry these minerals and vitamins in your daily menu plan. Vitamin A is found in animal livers, fish liver oils and green and yellow fruits and vegetables; vitamin C is found in berries, citrus fruits and green vegetables; vitamin E is found in avocados, cold pressed vegetable oils, dark green leafy vegetables, legumes, nuts, seeds and whole grains; zinc is found in egg yolks, fish, kelp, legumes, liver meats, mushrooms, soy and whole grains; and omega 3-fatty acids with its antibacterial and anti-inflammatory effects can be found in fresh coldwater fish such as salmon and mackerel, fish oil, and walnuts.