Zanthoxylum Bungeanum Fruit Extract

Zanthoxylum bungeanum (Sichuan pepper) fruit extract is used in cosmetics for “soothing/anti-itch” and sensory effects, but its pepper-derived alkylamides and volatile components can activate sensory nerves (tingling, warmth) and provoke stinging in compromised barriers. While typically used at low concentrations, sensitive-skin and eczema patients show higher likelihood of irritation or contact reactions to botanicals, so I treat it as a notable-risk ingredient requiring cautious introduction and patch testing. Safety Notes: In commercial soothing/anti-redness and “neurocosmetic” leave-on products, Zanthoxylum bungeanum fruit extract (often marketed as Sichuan pepper-derived) is frequently used at very low levels (≈0.001–0.05%) as part of a calming complex to reduce stinging/itch via sensory modulation. More “active-positioned” serums, ampoules, and sensitive-skin masks commonly run ~0.1–0.5%, while the highest consumer-available formulas observed are typically ~1–2% in concentrated leave-on treatments; above this, sensory effects (tingle/numbing), odor/color impact, and irritation risk usually become limiting. Rinse-off products generally sit toward the low end because of short contact time and to minimize sensory carryover.