Spots and scars, personally, have nothing to do with these. Usually pay attention to eating some fruits, vegetables and balancing the nutrition of the body.
Moreover, there is no scientific basis for eating soy sauce made of soybeans to deepen scar marks, but it is just a folk legend.
Wei Zeng Tang ... I don't understand this very well, but as long as you are careful not to use too many irritating spices, it won't make acne grow.
That's all I know. I hope I can help you a little.