Regulatory data is for reference only. Always verify with the official regulator before making formulation decisions. Last refreshed: 8/29/2026.
Ingredients/4-Hydroxy-2,5,6- triaminopyrimidine sulfate
4-Hydroxy-2,5,6- triaminopyrimidine sulfateCAS 1603-02-7
EU CosIng III — restrictedASEAN III — restricted
Regulatory status
| Source | Status | Annex / Details | Limit / Conditions | Last updated |
|---|---|---|---|---|
| EU CosIng | restricted | Annex III | — | |
| ASEAN | restricted | Annex III | To be printed on the label: “Hair colourants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary ‘black henna’ tattoos may increase your risk of allergy. Do not colour your hair if: - you have a rash on your face or sensitive, irritated and damaged scalp, - you have ever experienced any reaction after colouring your hair, - you have experienced a reaction to a temporary ‘black henna’ tattoo in the past. Do not use to dye eyelashes or eyebrows.” | — |
What this means
4-Hydroxy-2,5,6- triaminopyrimidine sulfate has regulatory signals in EU CosIng, ASEAN. Review the source links above for the official conditions and latest updates.
Common questions
- Is 4-Hydroxy-2,5,6- triaminopyrimidine sulfate restricted in EU cosmetics?
- 4-Hydroxy-2,5,6- triaminopyrimidine sulfate is restricted in EU cosmetics under Annex III.
- Is 4-Hydroxy-2,5,6- triaminopyrimidine sulfate restricted under the ASEAN Cosmetic Directive?
- 4-Hydroxy-2,5,6- triaminopyrimidine sulfate is restricted under the ASEAN Cosmetic Directive Annex III.
- What is the CAS number for 4-Hydroxy-2,5,6- triaminopyrimidine sulfate?
- The CAS number for 4-Hydroxy-2,5,6- triaminopyrimidine sulfate is 1603-02-7.
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