E920 L-cysteine: Halal or Haram?

Doubtful

A dough conditioner that softens bread. E920 (L-cysteine) is doubtful.

Why it is doubtful

It has historically been produced from feathers, hair or bristles, as well as synthetically, and the source is not declared.

Halal or not depends on what it is made from

E920 is Mushbooh: Halal when it is made by fermentation, synthetically or from bird feathers, not when it comes from human hair or pig bristles.

Made from	Verdict	Why
Made by fermentation	Halal	No animal involved
Made synthetically	Halal	No animal involved
Duck or poultry feathers	Halal	Most scholars hold bird feathers to be pure
Human hair	Haram	Using the human body is not permitted
Pig bristles	Haram	Pork
Halal-certified product	Halal	A certifier checked the source
Source not stated on the label	Mushbooh	The label does not say which

Scholarly view

Schools of law

Hanafi · Maliki · Shafi'i · HanbaliAll four prohibit L-cysteine made from human hair, because it violates human dignity (karamah), and all four accept it from duck or goose feathers, or from synthesis and fermentation. If a forbidden source had been chemically changed into a new substance they would split — Hanafi and Maliki accepting it, Shafi'i and Hanbali not — but that hardly arises, since industry uses feathers and synthesis.

Depends on source

Certification bodies

Certifiers (most)Accept feather-derived L-cysteine (made from L-cystine) as Halal.FoodSweeteners ↗

Permissible

Dept. of Islamic Development Malaysia / Halal Food Authority, UKE920 is cleared from a feather or synthetic source; a human-hair source is rejected — the source must be verified.JAKIM — Halal Malaysia Portal ↗HFA FAQ ↗

Verify source

Fatwa councils, scholars and other sources

Human-hair source (consensus)Using any part of the human body is not permitted; it goes against the dignity (karamah) God gave the human being.Mustakshif ↗

Impermissible

Duck / goose feathers (majority)Bird feathers are pure, so feather-derived L-cysteine (the main industrial source) is permissible.

Permissible

Synthetic / fermentationIt comes from no animal and no impure source, so it is Halal.HalalCodeCheck ↗

Permissible

IslamQA (istihala view)Transformed into another substance, so it becomes pure and lawful regardless of source.IslamQA 248124 ↗

Permissible

Only views with a published source are listed. Our app shows E920 as Mushbooh unless the label or the maker settles the source.

Where you meet it

Packaged bread, buns, bakery improvers.

What to do in the shop

Look for a product that names the source, says plant-based or vegan, or carries a Halal certificate. If nothing on the packet settles it, the manufacturer can tell you, and their answer is the only thing that turns E920 from a question into an answer.

A status here describes the additive in general, and a specific product can be different. The same number can be made from plant or animal material depending on the manufacturer, and the label does not say which.

Questions people ask

Is E920 Halal?

E920 (L-cysteine) is doubtful. It has historically been produced from feathers, hair or bristles, as well as synthetically, and the source is not declared.

How do I know if the E920 in a product is Halal?

Only the manufacturer can tell you which source they used, unless the packet says plant-based, vegan, or carries a Halal certificate.

Related additives

E921 L-cystine · Doubtful
E913 Lanolin · Doubtful
E904 Shellac · Doubtful

See all E-numbers →

Read this in Turkish: E920 helal mi? →

Products we asked the manufacturer about →

Check a product, not just a number

An additive's status describes the additive in general. What matters is the whole ingredient list on the packet in your hand.

This is information, not a fatwa. These statuses combine published scholarly positions with ingredient analysis, and they can be incomplete or out of date. For anything that matters, confirm with the manufacturer and with a qualified authority.