Can Tianqidan still be used when it has expired?

Tianqidan is a cosmetic. Once it expires, the functional ingredients in it will deteriorate and cannot exert their original effects and efficacy.

The effective components in expired meteorological pills have deteriorated. If you continue to use it, it will easily cause skin allergies, such as redness, itching, and even ulceration in severe cases. The quality of expired Tianqidan cannot be guaranteed, which may cause a series of skin problems and affect skin health.