Vitamin A reduce sebum production

Sebum plays the biggest role in formation of acne. If there were no sebum, there would be no acne. Vitamin A may help to reduce sebum production. However, high doses of vitamin A can carry a risk of decreased bone density, birth defects, headache, and muscle and joint pain. Vitamin A supplementation may not be necessary if there is adequate intake of beta-carotene, vitamin E, and zinc, all necessary for vitamin A formation. Decreasing unhealthy fats such as margarine, hydrogenated oils, processed foods, and other sources of transfats can also improve absorption. The top ten vitamin A-rich foods are: liver, sweet potatos, carrots, mangoes, spinach, cantaloupe, dried apricots, milk, egg yolks, mozzarella cheese. Take note that alcohol, coffee, or excessive iron can all deplete your body's supply of this essential vitamin.
Sources: 1, 2, 3