It? Take a look at the following introduction.　　Most of the ingredients in the whitening injection are antioxidant ingredients, the injection is in the form of a drop of liquid into the body, usually 3 days after the injection can gradually see the whitening effect. As long as you pay attention to maintenance after the operation, you will not turn black. Of course, the whitening injection can keep how long is also according to each person's different habits vary, the general situation can maintain the whitening effect of 3-10 years.　　In addition, after the whitening injection should do the following care matters: 1, whitening injection can not take drugs containing antibacterial agents in the short term.　　2, the injection site is best not to get wet within 24 hours.　　3, skin will feel dry after whitening injection treatment, need to strengthen the moisturizing. In addition, one week after the treatment can not be used containing fruit acids, a acid, salicylic acid, exfoliation, high concentration of vitamin C, alcohol and other stimulating ingredients in the maintenance products.　　4, whitening injection can not be alcohol, smoking, stay up late, eat spicy food.