acetic acid
存在於醋、某些水果及人類的汗液中，具有殺菌的功能，但也具有皮膚刺激性，可能使皮膚過乾。
It is found in vinegar, certain fruits and human sweat. It has a bactericidal function, but it also has skin irritation, which may make the skin too dry.
ref.
paulaschoice.com
cosdna.com
skin+ app的保養品成分標籤掃描功能,
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