Isoeugenol

Concerns

Allergen

What is Isoeugenol?

Isoeugenol is a synthetic organic compound structurally similar to eugenol, a natural phenol from clove essential oil, belonging to the allylbenzene class. It exists as a colorless to pale yellow oily liquid with a powerful, spicy, floral aroma reminiscent of carnations and cloves. Primarily employed in the fragrance category of cosmetics, it appears in perfumes, colognes, lotions, shampoos, soaps, and oral care items. In formulations, it functions by delivering distinct scent notes that define product character, blending with other aroma compounds, and neutralizing off-odors from raw materials or preservatives. This enhances the sensory profile, making products more appealing during use. Due to its volatility, it evaporates gradually, prolonging fragrance perception on skin or hair.

Comedogenic Rating 0/5 Low risk of clogging pores

EWG Safety Rating 3-4 View on EWG →

PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Flavoring agent

Adds or adjusts taste and aroma in oral care and lip products, improving user acceptance while complementing the overall sensory profile.

Fragrance ingredient

Contributes scent character and/or masks base odors, shaping the overall sensory experience of the formula (subject to allergen and IFRA considerations).

Masking

Reduces perception of unpleasant odors or tastes by neutralizing them or covering them with more acceptable sensory notes.

Benefits

Enhances products with a distinctive spicy, clove-like aroma.

Improves overall sensory experience in scented cosmetics and personal care.

Effectively masks undesirable odors from other formulation components.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit	Who Should Avoid
Users who enjoy spicy or floral fragrance profiles in daily products.	Those with known fragrance allergies or sensitivities.
Individuals using oral care items where flavor complements minty notes.	People prone to contact dermatitis from phenolic compounds.
People seeking odor-neutralizing effects in body washes or lotions.	Individuals with eczema or highly reactive skin conditions.

Safety Notes

Recognized as a common contact allergen, often requiring label declaration in regulated markets.
Formulated at low levels in rinse-off products to minimize exposure risks.

Frequently Asked Questions about Isoeugenol

What does isoeugenol smell like?

It has a strong, spicy, clove-carnation scent used to create appealing fragrance profiles.

Why is isoeugenol used in cosmetics?

It adds aroma, flavors products, and masks off-odors for better user experience.

Is isoeugenol comedogenic?

It has a comedogenic rating of 0, indicating low likelihood of pore clogging.