Hydrolyzed Pumpkin Seedcake

Hydrolyzed pumpkin seedcake is a hydrolyzed plant-protein/peptide conditioning ingredient typically used at low percentages in moisturizers and hair/skin formulas, and it is not inherently caustic like acids or retinoids. However, hydrolyzed proteins and botanical extracts have a documented pattern of causing occasional irritant or allergic-type reactions in sensitive or eczematous patients (protein/botanical sensitization risk), especially with leave-on use and compromised barriers. Given the uncertainty in standardization between suppliers and the higher-risk population, I score it as mild with occasional sensitivity possible. Safety Notes: Hydrolyzed Pumpkin Seedcake is typically supplied as a hydrolyzed protein/peptide-type conditioning active and is most often used at low levels (~0.05–0.5%) in mass-market leave-on moisturizers/serums and in rinse-off cleansers where it functions as a skin-conditioning/marketing botanical. Higher-strength consumer products (e.g., specialty peptide/enzyme “pumpkin” masks, hair/skin conditioning treatments) can reach ~1–5% when the formula is built around the ingredient or its trade-name complex, with the practical upper end constrained by odor/color, viscosity/tack, and stability/compatibility rather than a specific global regulatory limit.