Hydrolyzed Acacia Macrostachya Seed Extract

This is a hydrolyzed botanical seed extract typically used at low concentrations as a conditioning/film-forming or soothing support ingredient, but hydrolyzed plant proteins/extracts can still provoke irritation or allergic-type reactions in eczema-prone and highly reactive skin. Direct clinical irritancy data specific to Acacia macrostachya seed hydrolysate are limited, so given the potential for delayed sensitization with botanical-derived hydrolysates and the high-risk sensitive-skin population, a mild (0.4) irritancy score is the safest clinically appropriate assessment. Safety Notes: In commercial skincare, hydrolyzed botanical seed extracts like Hydrolyzed Acacia Macrostachya Seed Extract are often used at very low levels as part of a broader “botanical complex,” with effective labeling use commonly starting around 0.001–0.01% in leave-on serums/creams and occasionally in rinse-off cleansers at similar or lower levels due to short contact time. Higher-strength consumer products (typically leave-on anti-aging/firming serums and masks positioned around a single hero extract) can reach ~0.5–2.0% active, with the upper end constrained by solubility, odor/color impact, and formula stability/compatibility rather than specific regulatory limits.