E920 — L-Cysteine Hydrochloride
Flour treatment agent - improves dough extensibility
Also known as: L-Cysteine · Cysteine Hydrochloride
Verification required
Verify — Mushbooh
Source-dependent and requires verification. This additive may be derived from either halal (plant/synthetic) or haraam (animal) sources. Always check the product label or contact the manufacturer to verify the source.
Checking this in a shop right now?
Vegan / vegetarian label on pack → plant-based source → safe for this code
HFA / HMC / IFANCA / JAKIM logo → independently certified → safe
Neither? Follow the steps below.
School of Thought Breakdown
Hanafi
Verify source
Maliki
May permit
Shafi'i
Avoid if animal
Hanbali
Avoid if animal
One of the most controversial additives. L-Cysteine sourced from human hair or poultry feathers is considered haraam by all major Islamic scholars. Synthetic or fermentation-derived L-Cysteine is halal. Major halal certifiers require synthetic or plant-fermented sourcing. Look for halal-certified bread or contact the manufacturer.
What to do with this product
Follow these steps in order — most products resolve at step 1 or 2
Check for a "suitable for vegans" or "suitable for vegetarians" claim
If present, E920 comes from a plant-based source — safe for this code. Still check all other ingredients too.
Look for a halal certification logo on the pack
An HFA, HMC, IFANCA, JAKIM, or ESMA logo means the source has been independently audited. The E-code is confirmed halal in this product.
Neither? Here's what to do next:
Put it back and look for a certified alternative on the same shelf.
Check for products carrying an HFA, HMC, or IFANCA logo, or labelled "suitable for vegans". Either confirms a safe source.
Did you find a certified alternative?
Halal bread — free from animal-derived emulsifiers:
Browse halal alternatives on AmazonAmazon Associate — we earn from qualifying purchases.
About E920
Miscellaneous - compounds used to treat flour l-cysteine from human hair is haram. L-cysteine from chicken feathers is not Halal. L-cysteine from fermentation and synthetic source is Halal.
Verification Required
This additive's halal status depends on its source. Check the product label for a halal certification mark, or contact the manufacturer directly.
What is E920 made from?
- human hair (haraam)
- duck/chicken feathers (haraam - not zabiha)
- synthetic (halal)
- bacterial fermentation (halal)
Foods that commonly contain E920
Always check the ingredient label on the specific product - manufacturers may change formulations.
Frequently Asked Questions
Is E920 (L-Cysteine Hydrochloride) halal?
E920 (L-Cysteine Hydrochloride) is classified as Mushbooh (Questionable). Source-dependent and requires verification. This additive may be derived from either halal (plant/synthetic) or haraam (animal) sources. Always check the product label or contact the manufacturer to verify the source.
What is E920 used for?
E920 is used as a flour treatment agent - improves dough extensibility in food products.
What foods contain E920?
E920 (L-Cysteine Hydrochloride) is commonly found in: commercial bread, burger buns, pizza dough, flour tortillas, crackers.
What is E920 made from?
E920 can be derived from the following sources: human hair (haraam), duck/chicken feathers (haraam - not zabiha), synthetic (halal), bacterial fermentation (halal).
What are the other names for E920?
E920 may appear on food labels as: L-Cysteine, Cysteine Hydrochloride.
surface coating agents, gases, sweeteners — 32 E-codes: 25 Halal, 2 Haraam, 5 Mushbooh
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This information is for educational purposes only. For religious rulings, consult a qualified Islamic scholar or halal certification authority. E-code classifications may vary by source, manufacturing process, and school of thought.