Diisocetyl Dodecanedioate

What is Diisocetyl Dodecanedioate?

Diisocetyl dodecanedioate is a synthetic diester derived from dodecanedioic acid, a dicarboxylic acid, and isocetyl alcohol, a branched-chain alcohol. This clear, odorless liquid falls into the emollient ester family, widely incorporated into cosmetic products like lotions, creams, serums, sunscreens, and color cosmetics. It works by depositing a thin, flexible film on the skin that mimics natural sebum, promoting softness and slip while minimizing tackiness. In formulations, it lowers surface tension to facilitate even blending of oils and water, forming stable emulsions that resist separation. Its surfactant-emulsifying action supports cleansing products with gentle lathering, and as a skin conditioner, it helps preserve suppleness without heaviness, contributing to lightweight, fast-absorbing textures favored in modern skincare.

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

Delivers a velvety, non-greasy skin feel for comfortable wear.

Improves product spreadability and blendability in creams and lotions.

Aids in maintaining smooth, flexible skin texture through conditioning.

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 preferring lightweight, quick-absorbing moisturizers.	Those with allergies to synthetic esters or dicarboxylic acid derivatives.
Individuals with normal to oily skin types seeking non-comedogenic options.	People sensitive to emollient surfactants in rinse-off products.
Users of foundations or sunscreens for enhanced application and finish.	Individuals avoiding ingredients with low but untested personal tolerance.

Safety Notes

Considered low hazard in cosmetic concentrations based on safety assessments.
Non-comedogenic profile supports use across skin types without pore-clogging concerns.

Frequently Asked Questions about Diisocetyl Dodecanedioate

What does Diisocetyl Dodecanedioate do in products?

It acts as an emollient to soften skin, emulsifier to blend phases, and conditioner for smoothness.

Is it safe for daily skincare use?

Yes, it rates low on hazard scales and shows good compatibility in cosmetics.

Does it feel oily on skin?

No, it provides a dry, lightweight touch unlike heavier oils.