Hexylene Glycol

Benefits
Cleansing

What is Hexylene Glycol?

Hexylene glycol, chemically known as 2-methyl-2,4-pentanediol, is a synthetic aliphatic diol derived from petrochemical processes. This colorless, odorless liquid serves as a multifunctional ingredient primarily in skincare products like lotions, serums, cleansers, and hair care formulations. It functions by dissolving both water-soluble and oil-soluble components, enabling uniform blending of diverse ingredients. As a solvent, it facilitates the delivery of active compounds while controlling evaporation rates for optimal absorption. It also acts as a coupling agent in emulsions, stabilizing oil-in-water mixtures to prevent separation. Additionally, it modifies viscosity to achieve desired product flow and texture, enhances fragrance solubility for balanced scents, and supports surfactant action for effective cleansing without residue. Its humectant-like properties help retain moisture balance in formulations, contributing to overall product performance across rinse-off and leave-on applications.

Comedogenic Rating 2/5 Moderate risk
EWG Safety Rating 1 View on EWG →
PubChem View on PubChem →

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).
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.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
Surfactant
Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.

Benefits

Supports effective cleansing by lowering surface tension for better removal of impurities.

Enhances product texture through viscosity control for smooth, easy application.

Promotes skin conditioning to maintain softness and flexibility.

Who It's For

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

Who May Benefit Who Should Avoid
Individuals seeking lightweight, stable formulations in daily cleansers and moisturizers.
Those with highly reactive skin prone to reactions from glycols.
Users preferring products with balanced scents and improved ingredient solubility.
Individuals sensitive to fragrance components in cosmetics.
People with normal skin types looking for multi-role ingredients in emulsions.
People preferring completely anhydrous or glycol-free product lines.

Safety Notes

  • Rated low hazard by EWG with scores of 1 across assessments.
  • Deemed safe for cosmetic use by Cosmetic Ingredient Review experts.

Frequently Asked Questions about Hexylene Glycol

What is hexylene glycol used for in skincare?

It acts as a solvent, viscosity controller, emulsifier, and fragrance solubilizer to improve product stability and performance.

Is hexylene glycol safe for skin?

Yes, it carries a low EWG hazard score of 1 and is considered safe by cosmetic safety reviews.

Does hexylene glycol cause irritation?

It has low irritation potential based on safety assessments from authoritative sources.