Phytosteryl Macadamiate



Phytosteryl Macadamiate at a glance

  • An ester of phytoesterols and the fatty acids found in macadamia seed oil
  • Gives skin emollient, skin-softening properties
  • Assists in maintaining skin hydration
  • Source of essential fatty acids for the skin

Phytosteryl Macadamiate description

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.

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not Rated