Propylene Glycol Caprylate

What is Propylene Glycol Caprylate?

Propylene Glycol Caprylate is a synthetic ester formed by combining propylene glycol, a simple alcohol, with caprylic acid, a medium-chain fatty acid derived from coconut or palm kernel oil. It appears as a clear, oily liquid commonly incorporated into lotions, creams, cleansers, and hair care products. In formulations, it acts by reducing surface tension to aid mixing of oil and water phases, forming stable emulsions with a smooth texture. As an emollient, it mimics skin's natural lipids to fill surface imperfections and enhance slip during application. Its surfactant properties contribute to gentle cleansing and foaming, while skin conditioning effects help maintain suppleness. The ingredient provides a non-oily feel, making it suitable for lightweight products.

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:

Emollient

Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.

Surfactant

Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.

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.

Benefits

Softens and smooths skin surface for improved texture and feel.

Stabilizes emulsions to create consistent lotion and cream textures.

Supports mild cleansing and moisture retention without heaviness.

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 with normal to oily skin seeking non-greasy hydration.	Those with known sensitivity to propylene glycol derivatives.
Individuals preferring lightweight formulas in daily moisturizers.	People experiencing irritation from medium-chain fatty acid esters.
Users of cleansers and shampoos wanting smooth-rinsing products.	Individuals preferring completely natural or plant-only ingredients.

Safety Notes

Rated low hazard by EWG, indicating minimal health concerns.
Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Propylene Glycol Caprylate

What makes Propylene Glycol Caprylate lightweight?

Its medium-chain fatty acid structure provides emolliency without oily residue.

Is it safe for sensitive skin?

Generally low irritation potential per safety assessments.

How does it function in cleansers?

Acts as a surfactant to enable gentle foaming and rinsing.