Used primarily as a local anesthetic, especially in topical formulations for numbing mucous membranes. Commonly found in throat lozenges, sprays, and oral gels to relieve pain from sore throats, mouth ulcers, and minor oral irritations. Its fast-acting and long-lasting numbing effect makes it suitable for temporary relief in over-the-counter products. Also used in some dental and medical procedures where surface anesthesia is needed without injection. Due to its ability to penetrate tissue effectively, it is favored in products requiring quick pain relief in sensitive areas.