First: Yili pure milk can be used as a mask. You can make a honey milk mask: take honey 10g, fresh milk 10ml, and egg yolk 1ml, mix them evenly, make a paste, apply it to your face after washing, and wash it off after 20min, once a day. This mask can nourish the skin, prevent wrinkles on the face and make the skin white and tender.

Second: Milk mask is recommended twice a week. Insist on a cup of yogurt every day, drink more green tea and eat more fruits, which is also beneficial to skin whitening.

Third: if the milk has been fermented, then you can't make a mask. When dairy products go bad, there will be many bacteria and carcinogens. No matter where it is used, it is not good and cannot be used. If you make a mask, you must use yogurt. Only in this way can it be effective.