Ingredient

Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde

A fragrance ingredient — better known as Lyral (HICC), a synthetic aroma compound prized for its lily-of-the-valley/dewy-floral scent — that is now RESTRICTED: it has been one of the fragrance ingredients with the highest contact-allergy rates, and the EU has banned it from cosmetics, so it is being phased out rather than used.

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Good to know

Fragrance allergen
One of the fragrance compounds the EU requires to be declared, because a minority of people react to it.

What it does

moderate evidence

Benefits

Historically added a lily-of-the-valley (muguet) dewy-floral scent note — but it is no longer permitted in EU cosmetics

Side effects

One of the strongest and most frequent fragrance allergens, a leading cause of allergic contact dermatitis from cosmetics
Banned in the EU: Regulation (EU) 2017/1410 prohibited it, with products no longer allowed to be sold to consumers as of 23 August 2021 (alongside the oakmoss allergens atranol and chloroatranol)
Offers no skin-care benefit — it was there for fragrance only

Who it's for

Effectively no one in the EU — it is a banned fragrance allergen being phased out, not an ingredient to seek

Who should be careful

Everyone, and especially anyone with a fragrance allergy, sensitive or eczema-prone skin, or a known reaction to scented products; a product still listing it may be old or non-compliant stock

Upcoming ban of HICC/Lyral, Atranol and Chloroatranol - Biorius

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Products with Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde (6)

Roval

Dissolvant pour les ongles

skincare · cleanser

Shampooing Stop Pellicules Classique Gras

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