If you want to whiten, I recommend several effective methods, which I use myself:
First, I take vitamin C orally every day, as everyone should know ~ This method may be a bit slow, but it is really effective. After eating more than half of it, I felt my skin turned white and red (it was not black originally, but my skin color was a little dark yellow). Actually, it's not troublesome to eat. Just take one tablet a day. At present, there are about two kinds of drugs sold in pharmacies, one is medicine and the other is small. There is also a kind of health care, such as the health care house, which is more expensive and has much use. . I think it's not much better than small pills. Moreover, small vc tablets can be dissolved in water, and adding some pearl powder (which is available in general pharmacies and not expensive) is also very whitening.
Secondly, I'm using it now, but I forget the name of one of Ponzi's morning and evening creams, namely the white bottle and the blue bottle. They are the same, and they are used in the morning and evening. This is only slowly taking effect. I feel white after using it for two months (of course, I am also taking vc, probably because of it). This skin care product is widely used by students now, and it is not very expensive. A set of mid-range brands is about 80, but it can be used for a long time.
Third, I heard it from people, and I have never tried it myself. Lemon whitening? Make lemonade to drink. . . .
This should also be adjusted internally, and it will work slowly.