2,3-Diamino-6,7- dihydro-1H,5H- pyrazolo[1,2-a] Pyrazol-1-one dimethanesulfonate

Maximum permitted concentration

No specific maximum concentration

Regulatory framework

Regulation (EC) No 1223/2009 — Annex III, ref. 279

Last update reflected in the database: 16 June 2014

Conditions of use

After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 2,0 %

Labelling warnings

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.”