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HICC (Lyral)

Synthetic fragrance ingredient with a lily-of-the-valley scent. Banned in EU cosmetics since August 2021 due to high sensitization.

INCI: Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde

Evidence by route

D

Topical application

One of the strongest fragrance sensitizers per SCCS. EU fully removed it from cosmetics, international brands switched to substitutes.

How to read tiers A–F
  • DNo data, or very weak or conflicting data

Tolerability and safety

Irritation potential
High
Allergen risk
High
Pregnancy
Avoid
Use with caution
Sensitive, Normal, Dry, Oily, Combination

About this ingredient

HICC (Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde, Lyral) is a synthetic fragrance ingredient with a lily-of-the-valley scent, developed by IFF in the 1960s. EU ban. SCCS 2011 (Opinion 1456/11) based on patch-test data in 1.5-3% of patients with suspected fragrance allergy classified HICC as a strong sensitizer. EU Regulation 2017/1410 banned its use in cosmetics from August 2021 – the only fragrance ingredient fully banned. Where used (historically). Perfumery, soap, hair products with lily-of-the-valley scent (Dior J'adore, many classic feminine fragrances). After the ban brands reformulated. Safety. Banned in EU. Patch-test reactions in 1.5-3% of patients with suspected fragrance allergy. Pregnancy and lactation – avoid (AVOID).

Frequently asked questions

Is HICC (Lyral) safe during pregnancy?

HICC (Lyral) is not recommended during pregnancy. Consider an alternative from the same category.

What skin types is HICC (Lyral) for?

Use with caution in: sensitive, normal, dry, oily, combination.

Can HICC (Lyral) irritate the skin?

Yes, HICC (Lyral) has high irritation potential. Start at low concentrations, introduce gradually, and always use SPF during the day.

Can HICC (Lyral) cause an allergic reaction?

HICC (Lyral) has high allergen potential. Perform a patch test on the inner forearm 24 hours before facial application.

What is HICC (Lyral) and what does it do in cosmetics?

Synthetic fragrance ingredient with a lily-of-the-valley scent.

What's the INCI name for HICC (Lyral)?

The INCI name is Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde. It may also appear as: HICC, Lyral.

See HICC (Lyral) in a product composition right on the store page

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