What it is
This lipid is made by esterifying cholesterol with the fatty acids derived from macadamia nut oil, producing a skin-compatible emollient. It imparts a soft, cushioned feel and helps replenish the appearance of the skin's surface lipids. In sunscreens it contributes to a smooth, even spread of the product.
Safety & warnings
Generally well tolerated as a skin-conditioning lipid. Because it is derived in part from macadamia nut oil, it may be of concern to individuals with tree-nut sensitivities, though the esterified, refined form differs from the raw oil.
Origin & sourcing
Semi-synthetic ester combining cholesterol with fatty acids sourced from macadamia (Macadamia ternifolia/integrifolia) seed oil.
Questions everyone asks
What does cholesteryl macadamiate do in a sunscreen?
It acts as an emollient, softening the skin's feel and helping the formula spread smoothly and evenly.
Is it derived from nuts?
Yes, the fatty-acid portion comes from macadamia nut oil, combined with cholesterol to form the ester.