Coix Lacryma-Jobi Ma-Yuen Seed Extract

Coix Lacryma-Jobi Ma-Yuen (Job’s tears) seed extract is primarily a soothing/hydrating botanical used at low concentrations (typically <1–5%) and is generally well-tolerated in clinical and consumer use. However, as a complex plant extract with variable constituents, it carries a small but real risk of irritant or allergic contact reactions in highly reactive or eczema-prone patients, especially when layered with other actives. I rate it as gentle rather than very gentle to reflect this sensitization/variability risk and prioritize safety for compromised skin. Safety Notes: In commercial skincare, Coix Lacryma-Jobi Ma-Yuen (Job’s tears/adlay) seed extract is frequently used at very low levels (around 0.001–0.05%) as a label-claim botanical in multi-extract blends and low-viscosity toners/lotions. Mid-range leave-on serums and brightening/soothing emulsions commonly land around 0.1–1% depending on supplier potency and whether it’s glycerin/butylene glycol-based. The highest consumer-available levels are typically concentrated essence/ampoule-style products and some masks where a single botanical extract is a hero, reaching about 3–5% (higher is uncommon due to cost, solubility/odor/color impact, and variability of extract solids); rinse-off cleansers usually sit at the low end because of short contact time.