Hydroxyisohexyl 3-cyclohexene carboxaldehyde: is it comedogenic? What it does in skincare

What it does

Floral scent ingredient, no longer allowed in EU cosmetics.

• Masking
• Perfuming

Hydroxyisohexyl 3-cyclohexene carboxaldehyde in plain English

Hydroxyisohexyl 3-cyclohexene carboxaldehyde is a synthetic lily-of-the-valley scent compound and a well-known contact allergen. It has not been allowed in cosmetics sold in the EU since 2021, though it may still appear in older products or products from other markets. It is one of the scent components that must be named on EU labels above set levels because it can trigger allergic reactions in some people. For acne-prone skin it does not clog pores, but irritation and redness can make breakouts look and feel worse, so sensitive skin may do better without it.

Is hydroxyisohexyl 3-cyclohexene carboxaldehyde bad for acne?

Not usually, but it is worth watching. Hydroxyisohexyl 3-cyclohexene carboxaldehyde is not a proven pore-clogger, but scent ingredients like this can irritate sensitive skin, and irritated skin can make breakouts look and feel worse. Notice how your skin reacts when a product lists it near the top.

Clean routine and still breaking out? The cause may be internal. See what is driving it

Also called

• Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde
• HICC
• Lyral

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