Diisostearyl Malate

Benefits
Softening

What is Diisostearyl Malate?

Diisostearyl malate is a synthetic diester created by esterifying two molecules of isostearyl alcohol—a branched, long-chain fatty alcohol typically sourced from vegetable oils—with malic acid, a naturally occurring alpha-hydroxy acid from fruits like apples. This clear, oily liquid falls into the category of emollient esters widely used in cosmetics. It commonly appears in color cosmetics such as lipsticks, foundations, and mascaras, as well as anhydrous skincare products like balms and oils. In formulations, it serves multiple roles by forming a lubricating film on the skin that mimics natural lipids, reducing friction for smooth application and enhancing product spreadability. As an emollient, it fills surface imperfections to create a soft feel; as a skin conditioner, it helps preserve suppleness; and its mild surfactant action supports blending oil and water phases for stable emulsions. Its lightweight profile suits diverse formulations without heaviness.

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.
Surfactant
Lowers surface tension to enable cleansing, emulsifying, and foaming; central to shampoos, body washes, and many emulsions and micellar systems.

Benefits

Softens and smooths skin surface for improved texture

Enhances product slip and application ease

Supports skin flexibility and moisture balance

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 needing softness
Those with rare allergies to malic acid derivatives
Makeup users seeking smooth, long-wearing formulas
Individuals sensitive to fatty alcohol esters
People preferring lightweight, non-comedogenic emollients
Anyone experiencing irritation upon patch testing

Safety Notes

  • Low overall hazard rating from safety assessments
  • Non-comedogenic, suitable for acne-prone skin

Frequently Asked Questions about Diisostearyl Malate

What is diisostearyl malate made from?

It is a synthetic ester from isostearyl alcohol and malic acid, used for emolliency in cosmetics.

Is diisostearyl malate comedogenic?

It has a comedogenic rating of 0, meaning it does not clog pores.

Can it cause irritation?

It shows low potential for irritation based on cosmetic safety reviews.