Cleansing Agent

Macadamia Seed Oil Glycereth-8 Esters

INCI: MACADAMIA SEED OIL GLYCERETH-8 ESTERS

Reviewed by Emma · Last updated 2 Jun 2026

Also known as: Macadamia Seed Oil Glycereth-8 Esters

A plant-derived surfactant that cleanses whilst retaining skin's natural oils

Best For Skin Types

All, Sensitive, Oily, Combination

Addresses

Sensitivity, Redness, Barrier repair

Usage Frequency

Daily

What Is Macadamia Seed Oil Glycereth-8 Esters?

Macadamia seed oil glycereth-8 esters is a surfactant derived from macadamia seed oil, a botanical ingredient native to Australia. It is created by chemically combining macadamia oil with glycerin and polyethylene glycol, resulting in a molecule that bridges water and oil — a property that makes it useful in cleansing formulations.

Unlike traditional harsh surfactants, this ingredient is designed to remove dirt and excess sebum whilst maintaining the skin's protective lipid barrier. It is typically found in gentle cleansers, micellar waters, and emulsifying products where a softer approach to cleansing is desired.

How It Works

As a surfactant, macadamia seed oil glycereth-8 esters works by positioning itself at the boundary between water and oil. One end of the molecule attracts to oil-based impurities (sebum, makeup, environmental pollutants), whilst the other end remains water-soluble. This allows these impurities to be suspended and rinsed away without requiring aggressive rubbing or excessive water.

Because this ingredient originates from a natural oil rather than petroleum-derived sources, it tends to be less drying than conventional anionic surfactants, making it a gentler choice for cleansing.

Clinical Evidence & References

Published clinical research specifically on macadamia seed oil glycereth-8 esters is limited. However, the broader chemistry of plant-derived surfactants and macadamia oil itself has received attention in cosmetic literature. Macadamia oil is recognised for its emollient properties and similarity to skin's natural lipids, which may contribute to a less irritating cleansing experience.

In practice, this ingredient is widely used in gentle cleansers and is generally reported as well-tolerated. More targeted studies would help clarify its specific efficacy compared to other mild surfactants, particularly in sensitive or barrier-compromised skin.

How to Use

This ingredient is typically found in rinse-off products such as cleansers and micellar solutions; it is not usually applied in leave-on formulations. Use as you would any gentle cleanser — apply to damp skin, massage lightly, and rinse thoroughly with water. It can be used daily as part of your morning and evening cleansing routine, making it suitable for twice-daily use.

Safety & Precautions

Macadamia seed oil glycereth-8 esters is generally well-tolerated and considered mild. As with any surfactant, patch testing is advisable if you have very sensitive or compromised skin, though it is unlikely to cause irritation at typical use levels.

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