Useless In general, whitening drinks are not very effective and can only have side effects. If you want to whiten, you can inject whitening needle, which contains a lot of glutathione and vitamin C, which can inhibit the formation of melanin, play an antioxidant role, stimulate the rapid growth of subcutaneous whitening factors, and achieve the effect of whitening skin, so that the skin will gradually become white and moist. During the recovery period, the skin should be clean and hygienic.