Is CYSTEAMINE safe to use in EU cosmetics?

CYSTEAMINE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Always verify against the current official CosIng database before formulating.

What other records share CAS 60-23-1?

CAS 60-23-1 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

InventoryRef 9597823/04/2018

CYSTEAMINE

Q: How do I check if my formula contains CYSTEAMINE?

Use the INCI Checker tool on CosIng Checker to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

Ethanethiol, 2-amino- or Mercaptamine

CYSTEAMINE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Inventory details for CYSTEAMINE

INCI name

CYSTEAMINE

Description

Ethanethiol, 2-amino-

Mercaptamine

Annex records for CYSTEAMINE

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Key data

CAS

60-23-1

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Restriction

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Function

HAIR WAVING OR STRAIGHTENING

How CYSTEAMINE appears in the CosIng inventory

The CosIng inventory lists CYSTEAMINE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

CYSTEAMINE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

CYSTEAMINE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, CYSTEAMINE carries the following function designation(s):

HAIR WAVING OR STRAIGHTENING

CAS 60-23-1 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

View CAS records

Use the INCI Checker tool to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

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Source note for CYSTEAMINE

This page reproduces the CosIng inventory entry for CYSTEAMINE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research CYSTEAMINE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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Tools & next steps

Check your formula

Scan a full INCI list to detect CYSTEAMINE and any linked EU annex restrictions or allergen flags.

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Search similar ingredients

Find other inventory ingredients and annex entries related to CYSTEAMINE, its identifiers or nearby name variants.