Regulatory data is for reference only. Always verify with the official regulator before making formulation decisions. Last refreshed: 8/29/2026.
Ingredients/4,5-Diamino-1-(2- hydroxyethyl)-1H- pyrazole
4,5-Diamino-1-(2- hydroxyethyl)-1H- pyrazoleCAS 155601-30-2
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: The mixing ratio. “ Hair colorants 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
4,5-Diamino-1-(2- hydroxyethyl)-1H- pyrazole has regulatory signals in EU CosIng, ASEAN. Review the source links above for the official conditions and latest updates.
Common questions
- Is 4,5-Diamino-1-(2- hydroxyethyl)-1H- pyrazole restricted in EU cosmetics?
- 4,5-Diamino-1-(2- hydroxyethyl)-1H- pyrazole is restricted in EU cosmetics under Annex III.
- Is 4,5-Diamino-1-(2- hydroxyethyl)-1H- pyrazole restricted under the ASEAN Cosmetic Directive?
- 4,5-Diamino-1-(2- hydroxyethyl)-1H- pyrazole is restricted under the ASEAN Cosmetic Directive Annex III.
- What is the CAS number for 4,5-Diamino-1-(2- hydroxyethyl)-1H- pyrazole?
- The CAS number for 4,5-Diamino-1-(2- hydroxyethyl)-1H- pyrazole is 155601-30-2.
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