Ethyl Macadamiate

What is Ethyl Macadamiate?

Ethyl Macadamiate is an ethyl ester derived from the fatty acids extracted from macadamia nut seeds (Macadamia integrifolia or ternifolia), combined with ethanol. This clear, low-viscosity oil belongs to emollient ingredients commonly used in skincare formulations like lotions, creams, and serums. Its chemical structure closely resembles skin lipids, promoting good affinity and penetration into the upper skin layers. In cosmetics, it works by softening rough skin surfaces, enhancing product spreadability, and imparting a dry, velvety after-feel. As a skin conditioning agent, it helps preserve the skin's natural suppleness and flexibility. Its lightweight nature makes it ideal for oil-free or matte-finish products, where it mimics sebum without heaviness, supporting even application and comfortable wear.

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.

Benefits

Provides a smooth, silky texture without oiliness.

Supports skin softness and flexibility as a conditioner.

Offers non-comedogenic emolliency for easy absorption.

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 with oily or acne-prone skin seeking lightweight hydration.
Persons with allergies to macadamia nuts or tree nuts.
Those preferring matte, quick-absorbing textures in products.
Those who react to emollient esters, though uncommon.
Individuals wanting improved skin feel from daily moisturizers.
Users preferring completely anhydrous or minimal-ingredient formulas.

Safety Notes

  • Considered low hazard with minimal irritation potential.
  • Non-comedogenic profile suits broad skin types.

Frequently Asked Questions about Ethyl Macadamiate

What is Ethyl Macadamiate made from?

It's an ester of fatty acids from macadamia seed oil and ethyl alcohol, used for emolliency.

Is it suitable for acne-prone skin?

Yes, with a zero comedogenic rating, it avoids pore clogging.

Does it irritate sensitive skin?

It has low irritation potential based on safety data.