Jojoba Oil/Macadamia Seed Oil Phytosteryl Esters

This ingredient combines jojoba oil and macadamia seed oil with phytosteryl esters—plant-derived compounds that mimic the structure of skin's natural lipids. Jojoba oil is a liquid wax ester that closely resembles sebum, whilst macadamia seed oil is rich in fatty acids. The phytosteryl esters enhance the emollient and barrier-supporting properties of the blend.The formulation works as an occlusive and conditioning agent, helping to seal moisture into the skin and provide a protective layer.

Hydrating. Helps with Barrier Repair

Phytosterols are plant lipids structurally similar to cholesterol, which is a key component of the skin barrier. When applied topically, they can integrate into the stratum corneum and help maintain barrier integrity. The jojoba and macadamia oils penetrate slightly and provide lubrication, whilst also sitting on the skin surface to prevent moisture loss.This combination creates both an immediate softening effect and a longer-term barrier-support function, making it useful in formulations targeting dryness or compromised skin.

This ingredient is typically found in moisturisers, serums, and oils. It can be used daily, morning and evening, as part of a regular skincare routine. It works well layered with lighter hydrating products underneath and, if used in high concentrations, may be suitable as an occlusive step at night. Those with very oily skin may prefer to use products containing this blend selectively or in the evening only.

Generally well-tolerated across most skin types. Rare allergic reactions to tree nuts (macadamia) have been reported; those with nut sensitivities should patch-test first.