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.
4-Methoxyphenol
Hydroquinone methylether / Mequinol is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.
Research docs0Claims0Sources6FunctionAntioxidant • Flavouring and nutrientIdentifier150-76-5
Concern score
70/100High concern based on regulatory listings.
Well researched
How we scored this
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
- EU — restricted · 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: Artificial nail systems Maximum concentration: 0.02% (after mixing for use) Other conditions: Professional use Conditions of use and warnings: For professional use only Avoid skin contact Read directions for use carefully
Where it appears
Prevalence of 4-Methoxyphenol in our catalog (epa_cpdat).
Products
62
Brands
6
Raw materialsLaboratory suppliesIndustrial productsHome maintenance
Typical roles
AntioxidantFlavouring and nutrientHeat stabilizerReducing agent
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Good fit
Evidence read
The published evidence profile currently shaping this ingredient record.
No evidence profiles are attached to this ingredient yet.
Linked research
Primary documents currently linked to this ingredient record.
No linked research documents are attached to this ingredient yet.
Extracted claims
Structured claim signals pulled from linked ingredient research.
No extracted claims are attached to this ingredient yet.
Regulatory status
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: Artificial nail systems Maximum concentration: 0.02% (after mixing for use) Other conditions: Professional use Conditions of use and warnings: For professional use only Avoid skin contact Read directions for use carefully
Effective: 2010-11-04View source →
US
EPA
EPA CPDat observed this chemical in 62 composition records across product categories including Raw materials, Laboratory supplies, Industrial products. EPA CPDat classifies this chemical for functional uses including Antioxidant, Reducing agent, Flavouring and nutrient.
Effective: jan 24 1989View source →