Ingredient
Hydroxycitronellal
What is Hydroxycitronellal?
Hydroxycitronellal is a fragrance compound commonly used in perfumes and personal care products. It is a synthetic compound derived from citronellal, which is naturally found in citronella oils.
This ingredient is prized for its sweet floral scent, reminiscent of lily-of-the-valley, making it a popular choice in the fragrance industry. However, hydroxycitronellal is also known to be a potential allergen for some individuals, and its use may be restricted in certain products due to allergenic concerns. The scientific evidence regarding its health impacts primarily focuses on skin sensitization.
When you see hydroxycitronellal on a label, it indicates the item may have a floral fragrance, but it’s good to be aware if you have sensitive skin, as allergic reactions can occur.
Commonly found in: Fragrances, Hand Sanitizer, Lotions, Perfumes, Creams
What to watch
- It is a known allergen and can cause skin irritation in sensitive individuals.
Hydroxycitronellal is permitted for use in cosmetics and personal care products, although manufacturers must ensure it does not cause irritation.
Research highlights skin sensitization concerns, especially for those with sensitive skin or pre-existing allergies.
Hydroxycitronellal is a synthetic compound and is considered vegan-friendly.
Sources: Fragrance Allergens · Contact Allergy to Fragrances
Scout's take
EU 26 fragrance allergen and well-documented strong dermal sensitizer. The closely related Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde (HICC / Lyral) was banned by the EU in 2021 for the same class of sensitization issues; hydroxycitronellal itself remains restricted but is repeatedly cited in patch-test registries as a top fragrance allergen.
The case against
There are minimal risks, primarily related to potential skin irritation in very sensitive individuals.
from the analysis of Sol De Janeiro Brazilian Bum Bum CreamIt may cause skin irritation and allergic reactions in sensitive individuals.
from the analysis of Saltair Multi-Lipid Replenishing Body Butter - Salt Water VanillaThe case for
It enhances the sensory experience of using the product.
from the analysis of Saltair Multi-Lipid Replenishing Body Butter - Salt Water VanillaIt provides a floral scent to the product.
from the analysis of Sol De Janeiro Brazilian Bum Bum CreamMore from Scout's analyses
EU 26 fragrance allergen and one of the strongest known sensitizers — same family as banned HICC. IFRA caps at ~1% in leave-on products. Frequent culprit in fragrance contact dermatitis.
from the analysis of Phlur Missing Person Eau de ParfumHydroxycitronellal is a fragrance ingredient used to impart a floral scent. It is used in small amounts in cosmetics. It is generally considered safe for use in cosmetics.
from the analysis of Sol De Janeiro Brazilian Bum Bum CreamOne of the more potent EU-declared allergens — IFRA caps its use levels specifically because of its contact-allergy record in leave-on products.
from the analysis of Louis Vuitton Afternoon Swim Cologne PerfumeFound in 15 products
Scan any product to see every ingredient explained — and healthier swaps.
Download on theApp Store GET IT ONGoogle Play