What it is
Carnauba wax is one of the hardest natural waxes, with a notably high melting point, which makes it valuable for raising the melting point and improving the structural integrity of anhydrous and emulsion formulas. In sunscreens it helps build a cohesive, even film and can add a degree of stability to sticks, balms, and creams. It also contributes gloss and a smooth surface feel.
Safety & warnings
Carnauba wax is generally well tolerated and widely used, including in products intended for sensitive skin. It is not a common sensitizer. As with any wax, very heavy use in occlusive sticks may feel rich on the skin, but it is not regarded as notably comedogenic.
Origin & sourcing
Natural; derived from the leaves of the carnauba palm (Copernicia cerifera, also known as Copernicia prunifera), native to northeastern Brazil. The wax is harvested by collecting, drying, and threshing the leaves to release the protective wax coating.
History
Carnauba wax has a long history of use, originally valued for polishes and candles before becoming a common ingredient in foods, pharmaceuticals, and cosmetics.
Questions everyone asks
Is carnauba wax natural?
Yes. It is harvested from the leaves of the carnauba palm grown in Brazil and is plant-derived.
Why is carnauba wax used in sunscreens?
Its hardness and high melting point help structure the formula, build an even film, and add stability to sticks and creams.