The ingredient, explained

Butylphenyl Methylpropional

A published expert safety assessment covers the exact ingredient in the specified exposure context.

Perfuming

Explore connections

Ingredient guide

What it is and what it does

2--4-tert-Butylbenzyl-propionaldehyde; BMHCA

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Perfuming: A formulation role for perfume and aromatic raw materials that give a product its scent.

Function definitions: Danish Environmental Protection Agency: Cosmetic fragrance functions ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Safety assessment

SCCS concluded proposed concentrations could not be considered safe under aggregate exposure from multiple product types.

What this does not tell us

Institutional final expert safety report, not a benefit trial. Historical individual-product assessment is not current clearance; EU source confirms cosmetic ban from March 2022.

Sources for this summary. Published source ↗

Research review checked Oct 1, 2026

Bounded review of local candidates, exact-name indexed primary journal/PubMed safety and topical searches; not a systematic review.

Ingredient research is not proof that a product containing this ingredient works.