3-Hexenol

What is 3-Hexenol?

3-Hexenol, chemically known as (Z)-hex-3-en-1-ol, is an unsaturated primary alcohol featuring a six-carbon chain with a cis double bond between the third and fourth carbons. Naturally present in green leaves, herbs, and grasses, it captures the crisp, leafy aroma of fresh-cut vegetation. In cosmetics, it is either extracted from plant sources or synthesized for precision and purity. Primarily employed in the fragrance category of personal care products such as lotions, shampoos, and body washes, it imparts a vibrant green note that enhances sensory appeal. Beyond scent, its hygroscopic properties allow it to bind water molecules, supporting moisture retention in formulas. As a solvent, it facilitates the blending of oils and actives, while its viscosity-controlling action helps achieve smooth, stable textures for better application and feel.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Fragrance ingredient
Contributes scent character and/or masks base odors, shaping the overall sensory experience of the formula (subject to allergen and IFRA considerations).
Humectant
Attracts and holds water in the stratum corneum, boosting hydration and plumpness; commonly used in moisturizers, cleansers, and hair conditioners.
Solvent
Dissolves and carries other ingredients, helping control viscosity, evaporation rate, and delivery of actives in both water- and oil-based systems.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.

Benefits

Provides a natural, fresh green scent that elevates product sensory experience.

Supports skin hydration by attracting and retaining moisture in formulations.

Enhances formula stability by dissolving ingredients and controlling thickness.

Who It's For

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

Who May Benefit Who Should Avoid
People enjoying green, leafy fragrances in daily skincare routines.
Those with known sensitivity to fragrance compounds.
Individuals seeking lightweight hydration in moisturizers and cleansers.
People prone to contact allergies from plant-derived volatiles.
Users of shampoos and lotions wanting improved texture and spreadability.
Individuals preferring completely fragrance-free products.

Safety Notes

  • Rated low hazard by major safety assessors when used in typical concentrations.
  • Non-comedogenic, unlikely to clog pores in cosmetic applications.

Frequently Asked Questions about 3-Hexenol

What does 3-Hexenol smell like?

It has a fresh, green, grassy scent reminiscent of cut leaves and herbs.

Is 3-Hexenol safe for sensitive skin?

Generally low risk at cosmetic levels, but patch test if fragrance-sensitive.

What products commonly contain 3-Hexenol?

Fragranced items like lotions, shampoos, body washes, and conditioners.