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"When it comes to traditional Chinese medicine, can improper mixing cause adverse reactions?"
Su Mo'en didn't get straight to the point but rather beat around the bush, trying to verify whether it was a quality issue with the facial masks themselves that caused allergic reactions in people with special constitutions.
Qin Chuan gave a look of disdain, "There's a saying in Chinese medicine that all medicines have their poisons. It is all about balance. It's not the case that simply mixing good ingredients together will produce a beneficial effect. In fact, mixing certain herbs with different properties without mutual counteracting agents can be deadly!"
On Su Mo'en's pretty face, there was a bit of confusion. She understood the principle, but it was spoken in too general terms and still not detailed enough!