Hexyldecyl Stearate

What is Hexyldecyl Stearate?

Hexyldecyl stearate is a synthetic ester formed from stearic acid, a common fatty acid derived from vegetable oils or animal fats, and hexadecyl alcohol, a long-chain fatty alcohol. It belongs to the category of emollient ingredients widely used in skincare formulations such as moisturizers, sunscreens, and foundations. In products, it functions by reducing surface friction, providing a silky feel, and forming a lightweight barrier that mimics the skin's natural lipids. This helps with even application and enhances the delivery of other active components. Chemically stable and non-volatile, it contributes to product stability and sensory appeal without greasiness, making it suitable for both oil-free and emulsion-based cosmetics. Its branched structure ensures quick absorption and minimal residue.

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.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.

Benefits

Provides a smooth, non-greasy feel to skincare products.

Supports skin softness and flexibility through emollient action.

Improves product spreadability and moisture retention on skin.

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 with dry or rough skin seeking lightweight hydration.
Those with rare allergies to fatty acid esters.
Users preferring non-comedogenic ingredients in daily routines.
Individuals sensitive to emollient textures in heavy formulas.
People with sensitive skin needing gentle conditioning agents.
People avoiding synthetic-derived ingredients on principle.

Safety Notes

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

Frequently Asked Questions about Hexyldecyl Stearate

What is Hexyldecyl Stearate?

An ester of stearic acid and hexadecyl alcohol used as a lightweight emollient in cosmetics.

Is it safe for sensitive skin?

Yes, it has a low hazard rating and is considered safe with minimal irritation potential.

Does it clog pores?

No, it carries a comedogenic rating of 0, suitable for acne-prone skin.