Food use
Food-use source coverage is present in the current record.
The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.
1-Hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2 pyridon and its monoethanolamine salt is listed in Annex V of the EU Cosmetics Regulation (EC) 1223/2009 (preservatives allowed in cosmetic products).
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 25/100 (minor) · high confidence.
Catalog
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Food use
Food-use source coverage is present in the current record.
The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.
Fragrance avoidance
No fragrance-linked caution surfaced in the current profile.
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 V of EU Cosmetics Regulation (EC) 1223/2009: preservatives allowed in cosmetic products. Product types: a) Rinse-off products b) Other products Maximum concentration: a) 1.0% b) 0.5%
US
EPA
EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.
US
FDA
head and shoulders classic
Head & Shoulders
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.
openFDA substance registry classifies this ingredient as chemical.