Octyldodecyl Neopentanoate

Octyldodecyl Neopentanoate is a non-volatile emollient ester used to improve slip and reduce transepidermal water loss, typically present around 1–15% in leave-on products. It is generally classified as non-irritating to minimally irritating in patch testing and clinical use, with a low likelihood of stinging compared with surfactants, acids, or fragrance components. Because very reactive or eczematous skin can still flare to almost any lipidic emollient (often via occlusion or individual intolerance), I score it as very gentle rather than inert for patient safety. Safety Notes: Octyldodecyl Neopentanoate is a low-odor emollient/skin-feel ester typically used at low levels (~0.1–2%) in lotions/serums and as part of the emollient blend in sunscreens and color cosmetics (often ~1–10%). In high-slip, anhydrous or low-water leave-on products (lip products, balms, cream-to-powder foundations, some primer/oil-gel formats), it can be a major portion of the oil phase and reach ~20–35% in consumer OTC products; rinse-off products generally use it at lower levels due to deposition/feel needs and cost.