Hordeum Vulgare Extract

Hordeum vulgare (barley) extract is primarily a soothing/antioxidant botanical used at low concentrations in leave-on products, and it is generally well-tolerated in patch-test data. However, as a grain-derived plant extract containing multiple proteins and phenolic constituents, it carries a low but real risk of irritation or allergy in highly reactive or atopic individuals, especially with barrier compromise. Given sensitive-skin safety considerations and the variability of botanical extracts between suppliers, I rate it as gentle but not inert. Safety Notes: In mass-market leave-on creams/lotions and many rinse-off cleansers, Hordeum Vulgare (barley) extract is commonly used as a minor soothing/antioxidant botanical at very low levels (often around 0.001–0.1%), consistent with typical supplier-recommended use rates for plant extracts and its frequent placement low on INCI lists. Higher-end “botanical concentrate” serums, masks, and ampoules marketed around barley/seed extracts can push into the low single-digits, with observed consumer-available products reaching ~1–5% depending on extract form (e.g., glycerin/propylene glycol/water extracts vs powders). Levels above ~5% are uncommon in OTC skincare because botanical extract actives are usually delivered in diluted carrier solutions and higher loadings can create stability/odor/color and preservative-demand constraints.