Fragrance avoidance
Not a strong fit for fragrance avoidance because it carries Fragrance.
The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.
DL-Leucine
EPA CPDat observed this chemical in 66 composition records across product categories including Laboratory supplies, Personal care.
Research docs0Claims0Sources5FunctionFragrance • Softener and conditionerIdentifierDTXSID00859050
Concern score
5/100Low 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 5/100 (low) · high confidence.
Where it appears
Prevalence of DL-Leucine in our catalog (epa_cpdat).
Products
66
Brands
6
Laboratory suppliesPersonal care
Typical roles
FragranceSoftener and conditioner
Catalog
Found in these products
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Avoid
Evidence read
The published evidence profile currently shaping this ingredient record.
No evidence profiles are attached to this ingredient yet.
Allergen profile
Canonical allergen markers detected on this ingredient. Each row is derived from the ingredient’s name or synonyms matching a known allergen class — useful when scanning a label for a specific allergy context.
- MolluscsContains · Oral (ingested)
Source: chemindex_name_match
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.
US
EPA
EPA CPDat observed this chemical in 66 composition records across product categories including Laboratory supplies, Personal care. EPA CPDat classifies this chemical for functional uses including Softener and conditioner, Fragrance.
Effective: September 2018View source →
US
FDA
openFDA substance registry classifies this ingredient as chemical.
Effective: 2026-05-24View source →
