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IFRA Standard: 3 and 4-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde (HMPCC)

IFRA’s Standard on HMPCC (HICC) is a restriction by maximum concentration: the industry’s own rule, not law.

Not advice An educational summary of a public standard, as of 2026-09-30; not compliance advice. Read the current text at the source.

The property it manages is dermal sensitization and systemic toxicity. This page names the kind of limit; the figures per product category are at the source, which is the text to read.

The record

Each field carries its evidence: open a chip for the source, the quoted words and the confidence. A field with nothing behind it says so and stays empty.

Name
IFRA Standard: 3 and 4-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde (HMPCC)
documented

Amendment 49 3 and 4-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde (HMPCC)

IFRA-044 · International Fragrance Association (IFRA) · read 2026-09-30

confidence A

Body
IFRA (the industry’s self-regulation; not law)
documented

Amendment 49 3 and 4-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde (HMPCC)

IFRA-044 · International Fragrance Association (IFRA) · read 2026-09-30

confidence A

Instrument
IFRA Standard (Amendment 49)
documented

Amendment 49 3 and 4-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde (HMPCC)

IFRA-044 · International Fragrance Association (IFRA) · read 2026-09-30

confidence A

Kind of rule
RESTRICTION
documented

RECOMMENDATION: RESTRICTION MAXIMUM ACCEPTABLE CONCENTRATIONS IN THE FINISHED PRODUCT (%)

IFRA-044 · International Fragrance Association (IFRA) · read 2026-09-30

confidence A

What drives it
dermal sensitization and systemic toxicity
documented

INTRINSIC PROPERTY DRIVING RISK MANAGEMENT: DERMAL SENSITIZATION AND SYSTEMIC TOXICITY

IFRA-044 · International Fragrance Association (IFRA) · read 2026-09-30

confidence A

In short
A restriction: a maximum acceptable concentration in the finished product for each product category. EU law goes further and prohibits the substance in cosmetic products.
documented

RECOMMENDATION: RESTRICTION MAXIMUM ACCEPTABLE CONCENTRATIONS IN THE FINISHED PRODUCT (%)

IFRA-044 · International Fragrance Association (IFRA) · read 2026-09-30

confidence A

Dates
  • published (IFRA Amendment 49): 2020 (Amendment 49)
    documented

    History: Publication date: 2020 (Amendment 49)

    IFRA-044 · International Fragrance Association (IFRA) · read 2026-09-30

    confidence A

Applies to
As of
2026-09-30
read date

the house’s own reading, labelled as such

the date the public text was read for this summary; the text may have changed since

confidence B

The text
read the current text at the source
source

IFRA-044 · International Fragrance Association (IFRA) · read 2026-09-30

the current text is the one to read

confidence A

Sources

  1. IFRA-044 · International Fragrance Association (IFRA). IFRA Standard: 3 and 4-(4-Hydroxy-4-methylpentyl)-3-cyclohexene-1-carboxaldehyde (HMPCC), Amendment 49 (2020). Geneva: IFRA Standards Library. d3t14p1xronwr0.cloudfront.net/docs/standards/IFR… · read 2026-09-30 · published by IFRA; no reuse licence stated; quoted

These records are published under CC BY 4.0.

this record as data: /data/regulation/ifra-hmpcc.json · version 1 · updated 2026-09-30 · confidence A