Oryza Sativa Cera

Oryza Sativa Cera (rice bran wax) is a high–molecular weight occlusive/emollient wax used at low-to-moderate levels to thicken and reduce transepidermal water loss, and it is generally non-reactive in patch testing with irritation uncommon. In highly eczema-prone or barrier-compromised patients, heavy waxy occlusives can occasionally provoke discomfort or follicular occlusion-related irritation, so I rate it very gentle rather than inert for safety. Safety Notes: Oryza Sativa (Rice) Bran Wax is used as a structuring/viscosity-building wax and texture modifier; in many leave-on emulsions, lotions, and color cosmetics it appears at low levels (~0.05–0.5%) to add slip, stabilize, or reduce oiliness without noticeable waxiness. In richer balms, sticks (lip balm, deodorant sticks), anhydrous butters, and pomades, it is commonly used around 1–10% as a primary structurant and can reach ~15–20% in very high-wax consumer stick/balm systems. No specific EU/FDA concentration cap is typical for this cosmetic wax; practical upper limits are driven by hardness, pay-off, and processing constraints rather than regulation.