Fragrance
DIMETHYLHYDROQUINONE
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A dimethylated hydroquinone — a compound class with serious cosmetic restriction history and best avoided.
2,5-Dimethylhydroquinone (CAS 95-71-6) and related dimethyl isomers are substituted hydroquinones — a chemical class strictly regulated in cosmetics. Unsubstituted hydroquinone is banned in EU cosmetics (Annex II) and its use as a leave-on cosmetic is restricted in most jurisdictions because of ochronosis, contact sensitization, irritation, and concerns about mutagenicity. Methylated hydroquinones can still undergo oxidative activation and have antioxidant/redox activity, so regulators have historically been cautious about their cosmetic use. Although this specific compound is sometimes listed as a fragrance, hydroquinone-class labeling alone is enough to reduce confidence; conservative practice is to avoid it in modern cosmetic formulations.
Function
Skin benefits
- Historical use as antioxidant/stabilizer
- May contribute an olfactory role at trace levels
Known concerns
- Hydroquinone-class compound — skin-lightening concern
- Hydroquinone is restricted/banned as cosmetic leave-on ingredient in EU and heavily regulated elsewhere
- Potential for ochronosis, sensitization, and tissue damage
- Dimethylated variant may still undergo oxidative or metabolic activation
- Not considered a safe cosmetic ingredient
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related fragrances
Check your shelf
Find DIMETHYLHYDROQUINONE in your products.
Scan any cosmetic product with LuxSense to see if it contains DIMETHYLHYDROQUINONE and get a full ingredient breakdown with safety scores.
This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.