Cetyl Palmitate

Cetyl palmitate is a waxy fatty ester used mainly as an emollient/thickener (often ~1–10%) and is generally well tolerated, with low rates of irritation in routine use. It is not a potent active and is chemically similar to skin lipids, so true irritant reactions are uncommon, but very reactive or eczema-prone skin can still flare from occlusive texture, formulation load, or co-ingredients—so it is not fully “inert.” Safety Notes: Cetyl palmitate is used in small amounts as an opacifier/texture modifier in lotions, creams, and some cleansers (often ~0.05–0.5% when it is a minor structurant among other fatty alcohols/esters). It is also used at much higher levels as a primary waxy emollient/structurant in rich balms, cold creams, pomades, and stick-type products, where total wax/ester structuring systems can place cetyl palmitate in the ~10–25% range in consumer OTC products. It is not specifically restricted in EU/FDA cosmetics, so the practical upper limit is driven by aesthetics (waxy drag), crystallization/graininess control, and compatibility with the overall oil/wax phase, with leave-on products typically reaching higher levels than rinse-off.