一種皂鹼，由棕櫚酸經過皂化反應製得，可以從自然界取得，也可以人工合成，可能會造成皮膚過度乾燥，並且具有鹼性，可能會破壞皮膚障壁功能，並造成有害細菌在皮膚上的增生。
Saponification of palmitic acid is a kind of saponification reaction. It can be obtained from nature or synthesized artificially. It may cause excessive dryness of the skin, and it is alkaline. It may damage the barrier function of the skin and cause the proliferation of harmful bacteria on the skin.
ref.
paulaschoice.com
cosdna.com
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