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PCA
L-2-Pyrrolidone-5-Carboxylate
Cas No:98-79-3; 149-87-1
Moisturizer
2016-03-01

吡咯烷酮羧酸是存於皮膚角質層的自然保濕成份NMF (Natural Moisturizing factor )當中保濕性最強的。

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