http://www.ewg.org/skindeep/ingredient/700503/ARGININE/

naturally occurring amino acid. COMPLETELY SAFE

A semi-essential (infants cannot synthesize it, but adults can) amino acid that is one of the primary building blocks of hair keratin and skin collagen. It's a natural moisturizing factor, a skin hydrator and might also help to speed up wound healing.
Arginine usually has a positive charge (cationic) that makes it substantive to skin and hair (those are more negatively charged surfaces) and an excellent film former. Thanks to the positive charge, it also creates a complex with AHAs (AHAs like to lose a hydrogen ion and be negatively charged, so the positive and the negative ions attract each other) that causes a "time-release AHA effect" and reduces the irritation associated with AHAs

https://incidecoder.com/ingredients/arginine

Arginine 帶正電 所以也算陽離子介面劑，不過比四級銨鹽類的溫和多了。另外他也是NMF