Mix sweet potato root powder with honey or purified water, let it stand for 15 minutes, then apply it on your face, dry it and wash it off with warm water (salt water is preferred), once every other day. Pay attention to avoid using it with other organic cosmetics during use. If the acne on your face is red and broken, don't use it for the time being. If you are allergic to eggs, you can take it with honey or water.

Recommend a secret recipe for acne marks:

1 sweet potato root powder+egg white to remove acne marks

Both sweet potato root powder and egg white have the functions of calming and whitening skin. When they are mixed together as a mask, not only will the skin become smoother and smoother, but the traces of acne will gradually fade.

2. Sweet potato root powder+yogurt to remove acne marks

This method should be adhered to for a long time, and sweet potato root powder should not be put too much, otherwise it will easily clog pores. Yogurt should be as low-fat or skim as possible to avoid fat particles caused by too many nutrients.

Li Shizhen's Compendium of Materia Medica records that pure sweet potato root powder can cure "black sore".

Sweet potato root has the effects of clearing away heat and toxic materials, relieving swelling and resolving hard mass, promoting blood circulation and removing blood stasis, thoroughly removing facial toxins, promoting blood circulation and removing blood stasis, improving blood circulation of skin, eliminating facial black spots and effectively removing acne and acne scars.