Glyceryl Diisostearate

What is Glyceryl Diisostearate?

Glyceryl Diisostearate is a diester produced by esterifying glycerin with isostearic acid, a branched fatty acid typically sourced from vegetable oils through isomerization processes. It belongs to the class of glyceryl esters widely used in leave-on skincare products like moisturizers, creams, and makeup foundations. In formulations, it functions primarily as an emollient by depositing a thin lipid film on the skin's surface, which helps diminish the appearance of fine lines and improves product glide during application. As an emulsifying agent, its amphiphilic structure enables it to surround oil droplets in water-based systems, preventing separation and ensuring a uniform consistency over time. Furthermore, its light-scattering properties serve as an opacifying agent, transforming clear liquids into visually appealing, creamy textures while helping to conceal imperfections in the product itself.

Comedogenic Rating 4/5 Higher risk of clogging pores
EWG Safety Rating 1 View on EWG →
PubChem View on PubChem →

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.
Emulsifying agent
Enables stable mixing of oil and water phases by forming an interfacial film, helping create lotions, creams, and cleansers with consistent texture.
Opacifying agent
Makes a formula less transparent to create a creamy, opaque look; can also help visually mask suspended particles and improve aesthetic uniformity.

Benefits

Softens and smooths the skin's surface for a more even feel.

Stabilizes oil-in-water emulsions in lotions and creams for lasting texture.

Creates an opaque, luxurious appearance in cosmetic products.

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 normal skin needing extra smoothness.
People with oily skin due to potential pore-clogging.
Users of thick creams and lotions for better spreadability.
Acne-prone individuals given moderate comedogenic rating.
Those preferring products with a creamy, non-transparent look.
Those sensitive to heavy emollients that may feel occlusive.

Safety Notes

  • Regarded as safe for use in cosmetics by expert review panels.
  • Assigned low overall hazard scores in scientific databases.

Frequently Asked Questions about Glyceryl Diisostearate

What is Glyceryl Diisostearate made from?

It is formed by combining glycerin with isostearic acid, a fatty acid from vegetable sources.

Is it safe for daily skincare use?

Safety reviews confirm it is suitable for cosmetic applications at typical levels.

Does it suit oily skin?

Its comedogenic nature makes it less ideal for oily or acne-prone skin types.