Check the listing for details. 2 Humco Benzoin Tincture 2 FL. oz (2 Pack) Exp. Date 10/2026. Condition: New. Listed at 36.95 USD. Benzoin Tincture 2 FL OZBY HUMCO Safety SealedFirst Aid Oral Mucosal ProtectantWound Dressing PACK OF 2 BOTTLES This product is used on minor skin sores and wounds to protect the area from irritation and infection. Benzoin is also used on canker sores in and around the mouth to protect them so they can heal. When taken by mouth: Benzoin is LIKELY SAFE when used in amounts found in foods. It is POSSIBLY UNSAFE when used in medicinal amounts. Taking compound benzoin tincture accidentally by mouth has caused stomach bleeding. When applied to the skin: Benzoin is POSSIBLY SAFE when applied to the skin in appropriate amounts. This medicine may cause harm if swallowed. If benzoin tincture is swallowed, call a doctor or poison control center right away.