Phytosteryl Macadamiate
Reviewed by Kate · Last updated 18 Aug 2026
Also known as: Ethyl Macadamiate
An ester of phytoesterols and the fatty acids found in macadamia seed oil | Gives skin emollient, skin-softening properties
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What Is Phytosteryl Macadamiate?
Phytosteryl macadamiate is a beneficial skin-conditioning and emollient ingredient. It’s the ester of phytosterols, substances found in plants, and fatty acids that are derived from macadamia seed oil.
When applied to skin, phytosteryl macadamiate offers softening benefits while also assisting skin in the retention of moisture, lending skin a healthy, hydrated look. Beyond skin care, phytosteryl macadamiate is often used in hair care formulations.
In its raw material form, phytosteryl macadamiate appears as a white or pale-yellow waxy paste. The Cosmetic Ingredient Review Expert Panel has deemed phytosteryl macadamiate safe for use in cosmetics.
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