Orbignya Oleifera Seed Oil

Orbignya oleifera (babassu) seed oil is a non-fragrant emollient oil typically used at a few percent up to higher levels to reduce transepidermal water loss and improve barrier feel, and it is generally well-tolerated in patch testing with low rates of irritation. The main risk in highly reactive or eczematous skin is rare contact allergy or irritation from oxidation products/impurities (especially in poorly refined or aged oils), so it is not fully inert but remains very gentle for most sensitive users. Safety Notes: Orbignya oleifera (babassu) seed oil is used at very low levels (~0.05–0.5%) in emulsions as a minor emollient/skin-feel modifier alongside other oils, and at ~1–15% in many leave-on lotions, creams, balms, and hair conditioners. The high end includes anhydrous body oils/butters and “100% babassu oil” single-ingredient products sold OTC, where it is effectively 95–100% of the formula (100% when marketed as the sole INCI). Rinse-off products (cleansers/soaps) can also contain it, typically a few percent up to higher levels in bar/anhydrous cleansing formats, but the maximum observed consumer-available concentration is set by neat oil products.