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I heard that Dr. Han's patent on professional acne is fake, and unqualified products are harmful to the skin. Is it true?/You don't say.

If there is a patent, you can ask others to provide the patent number. Then you just need to check whether this patent exists.

This is usually checked at the National Bureau of Knowledge or the European Special Bureau.

Generally unqualified acne products are definitely harmful.

China people pay attention to "healthy parents". There is no need for anyone else to have plastic surgery unless they are stars.

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