amino_acid · ingredient
The E920 HCl salt of L-cysteine; identical sourcing concern (commonly human-hair / feather, sometimes synthetic). Mirrors the shipped 'l-cysteine' row EXACTLY so the longest-first matcher cannot drop its strict-profile HARAM signal on the salt form. Source-dependent: undisclosed source is conservatively Doubtful; strict madhhab treats human-hair derivation as HARAM. NOT scholar-ratified; cross-check vs JAKIM MS 1500:2019 + MUIS Halal Additive Guide 2018.