There are many therapeutic methods,

Lemon barley water whitening,

Honey lemon tea-whitening and moistening intestines

Lemon Chrysanthemum Tea-Replenishing Water and Reducing Fire

Lemon vinegar-freckle and detoxification

Vitamin C can whiten skin, resist aging and improve resistance, while vitamin E can delay aging and remove spots. These two kinds should be taken one hour after lunch, and the effect is the best.

I hope the answer can help you!