Emollient

Diethylhexyl Maleate

INCI: DIETHYLHEXYL MALEATE

Reviewed by Emma · Last updated 14 Aug 2026

A synthetic emollient that softens and conditions the skin barrier

Best For Skin Types

All, Dry, Combination

Addresses

Dryness, Hydration

Usage Frequency

Daily

What Is Diethylhexyl Maleate?

Diethylhexyl maleate is a synthetic ester derived from maleic acid and alcohols. It functions as an emollient and skin conditioning agent, working to soften the skin and improve the feel of formulations.

This ingredient is commonly used in skincare and cosmetic products to enhance texture and provide a smooth application experience. It helps maintain skin hydration by reducing water loss from the skin surface.

How It Works

As an emollient, diethylhexyl maleate works by forming a protective layer on the skin surface. This layer reduces the evaporation of water from the stratum corneum, the outermost layer of skin, helping to maintain moisture levels.

The ingredient also improves the sensory experience of skincare products, contributing to their overall feel and ease of application without necessarily penetrating deeply into the skin.

Clinical Evidence & References

Limited published clinical data is available specifically examining diethylhexyl maleate's effects on skin. However, as a well-established cosmetic ingredient, it has a history of use in formulations designed to improve skin hydration and texture.

The ingredient is generally recognised as safe for cosmetic use at typical concentrations. Further research would help clarify its specific benefits in isolation from other formulation components.

How to Use

This ingredient is typically incorporated into moisturisers, serums, and other leave-on products by manufacturers rather than used standalone. It works well alongside other conditioning agents and emollients to enhance overall formula performance and skin feel.

Safety & Precautions

Diethylhexyl maleate is generally well-tolerated in cosmetic formulations. Rare contact sensitivity has been documented in occupational settings, though this is uncommon in typical skincare use.

Frequently Asked Questions

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