First of all, health care products: rose hip capsules and grape seeds are eaten together, glutathione, lipoic acid and vc are eaten together, or vc and ve are eaten together. These are foreign health products, but be careful not to use too much. Secondly, for whitening, anti-oxidation is particularly important, not to say that anti-oxidation is anti-aging. In fact, the early twenties are also antioxidant and beneficial to whitening. I just eat a little carrot every day, not too much, and then dark purple fruits and vegetables, blueberries and purple grapes containing anthocyanins. I have seen that it is best to eat several different antioxidant foods, and the effect is better. Finally, I also eat some powder made of red beans, red dates, medlar and barley, which is better for my skin.
The most important thing is not to stay up late, but also to pay attention to sun protection, otherwise any whitening is invalid.