Cucurbita Pepo Seed Oil

Cucurbita Pepo (pumpkin) seed oil is an emollient lipid typically used at a few percent up to higher levels in moisturizers, and it is generally well-tolerated with low irritancy in standard patch testing compared with fragrances or active acids. However, as a botanical seed oil it can still trigger irritation or allergic contact reactions in a small subset of highly reactive or eczema-prone patients (often due to minor components/oxidation products), so it is not scored as “very gentle” or “exceptionally gentle.” In cumulative routines, the main risk is sensitized or compromised-skin users rather than inherent irritancy of the oil itself. Safety Notes: In commercial skincare, Cucurbita Pepo (Pumpkin) Seed Oil is frequently used at very low levels (around 0.01–0.1%) as a label-claim emollient in lotions/creams, cleansers, and multi-oil blends, especially in rinse-off where deposition is limited. Mid-range use (1–20%) is common in leave-on facial oils, balms, and body butters as part of the emollient phase. The high end extends to 100% in consumer-sold single-ingredient pumpkin seed oil products marketed as face/body oils; no specific FDA/EU maximum is set for this cosmetic ingredient beyond general safety and impurity controls.