Why is it black after using Zhuo Fanqi Emperor?

Skin intolerance. The blackening after using Zhuoqifan Patch is mainly due to the skin intolerance during the use of the product, which has a rebound effect. The main components of Zhuoqifan Plaster include glycyrrhizic acid, hyaluronic acid and collagen. Its original function is to whiten spots. If skin intolerance occurs, it will have the opposite effect, so it will turn black.