Emollient

Distearyl Phthalic Acid Amide

INCI: DISTEARYL PHTHALIC ACID AMIDE

Reviewed by Rosie · Last updated 2 Jun 2026

A synthetic emollient that smooths and conditions the skin barrier

Best For Skin Types

All, Dry, Combination, Mature

Addresses

Dryness, Barrier repair

Usage Frequency

Daily

What Is Distearyl Phthalic Acid Amide?

Distearyl phthalic acid amide is a synthetic emollient derived from phthalic acid and stearyl alcohol. It functions as a skin conditioning agent, working to soften and smooth the skin surface by forming a protective layer.

This ingredient is commonly used in skincare formulations to improve texture and provide a silky feel. It is not naturally derived and is designed specifically for cosmetic use.

How It Works

Distearyl phthalic acid amide works by depositing a thin, conditioning film on the skin surface. This layer helps to seal in moisture and smooth the appearance of the skin, whilst contributing to a pleasant sensory experience during application.

The ingredient does not penetrate deeply into the skin; instead, it conditions the outer layer, making it particularly useful in formulations designed to improve skin feel and reduce visible roughness.

Clinical Evidence & References

Distearyl phthalic acid amide has a long history of safe use in cosmetics, though published clinical studies specifically examining its efficacy are limited. It is well-established as a conditioning agent in the cosmetic industry and is recognised for its skin-softening properties.

The ingredient is generally regarded as effective for improving skin smoothness and texture when used in appropriately formulated products. More targeted research would help clarify specific benefits for particular skin concerns.

How to Use

This ingredient is typically used as part of a complete formulation rather than as a standalone treatment. It is most effective when combined with complementary actives suited to your skin concern. Use as directed on the product packaging, generally as part of your daily or regular skincare routine.

Safety & Precautions

Distearyl phthalic acid amide is generally well-tolerated and has a long safety history in cosmetic use. It is suitable for most skin types, though those with very sensitive skin should patch-test as with any new ingredient.

Frequently Asked Questions

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