Phytosteryl Macadamiate

What is Phytosteryl Macadamiate?

Phytosteryl Macadamiate is a cosmetic ingredient formed by combining phytosterols, which are plant-derived sterols similar to cholesterol, with fatty acids extracted from macadamia nut seed oil (Macadamia integrifolia). This esterification process yields a stable, lightweight, oil-soluble compound with emollient properties. Primarily featured in skincare creams, lotions, serums, and hair products, it functions by creating a breathable film on the skin's surface and hair shafts. This film helps lock in moisture, reduces transepidermal water loss, and enhances the skin's barrier integrity while improving product texture for better application. Its structure closely parallels human sebum, allowing seamless integration without heaviness or greasiness, making it suitable for daily formulations.

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:

Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.

Benefits

Provides emollience to soften and smooth skin texture.

Enhances hair manageability, shine, and frizz control.

Supports skin barrier by reducing moisture evaporation.

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 seeking lightweight hydration.
People with known allergies to macadamia nuts or tree nuts.
People with brittle or dull hair needing conditioning.
Those sensitive to plant sterol derivatives.
Those preferring non-greasy, plant-based emollients in routines.
Users preferring fully synthetic or mineral oil-free products.

Safety Notes

  • Considered low hazard for cosmetic use based on safety assessments.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Phytosteryl Macadamiate

What is Phytosteryl Macadamiate derived from?

It comes from phytosterols esterified with fatty acids from macadamia nut seed oil.

Is it suitable for sensitive skin?

Yes, it has a low irritation profile and supports skin barrier function.

Does it work on hair products?

It conditions hair by improving softness, shine, and reducing friction.