Fragrance avoidance
No fragrance-linked caution surfaced in the current profile.
This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.
Di[2-[4-[(E)-2- [2,4,5-trimethoxyphenyl]vinyl]pyridinin-1-ium]butanoyl]aminoethyl]disulfanyl dichloride is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.
Concern score
The concern value reflects this ingredient's chemical identity — its hazard profile from the published classifications and regulatory status below — not the safety of a product it appears in. A score near 40 is the baseline for ingredients with no specific signal (water scores 40 by design), so a mid-range value is not a safety verdict.
Concern score 70/100 (high) · high confidence.
Regional restrictions
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Fragrance avoidance
No fragrance-linked caution surfaced in the current profile.
This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.
The published evidence profile currently shaping this ingredient record.
Primary documents currently linked to this ingredient record.
Structured claim signals pulled from linked ingredient research.
Published jurisdiction-level classifications and regulatory designations for this ingredient.
EU
EC
Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Product types: Hair dye substance in non-oxidative hair dye products Maximum concentration: As from 3 September 2017: 0,5 % Conditions of use and warnings: As from 3 March 2018: “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…
US
EPA
EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Dye.