Can I still use痱子粉 (heat rash powder) after it has expired?

Jul 11, 2024 Source: Cainiu Health
Disease description:

Recently, I've developed some more prickly heat rashes, so I wanted to use the prickly heat powder I had bought last year for the same issue. However, I found out that it has expired. May I ask, is it still safe to use prickly heat powder after it has expired?

Doctor's answer (1)
Dr. Wang Xiaoyan
As a common summer skincare product,痱子粉 (talcum powder) is mainly used for the prevention and treatment of skin problems such as prickly heat caused by hot and humid environments. Once痱子粉 (talcum powder) expires, its active ingredients may gradually decompose, reducing its original preventive and therapeutic effects. Additionally, expired products may breed bacteria or undergo chemical changes due to improper storage, which may not only fail to relieve skin discomfort but also irritate the skin, causing adverse reactions such as allergies and swelling. Therefore, for personal health considerations, it is not recommended to use expired痱子粉 (talcum powder). If痱子粉 (talcum powder) is found to be expired, it should be discarded promptly, and a new product should be purchased to ensure its safety and effectiveness. At the same time, storage of痱子粉 (talcum powder) should follow product instructions, avoiding direct sunlight and humid environments to extend its shelf life.