Tolycaine is primarily used as a local anesthetic in medical and dental procedures. It works by temporarily numbing specific areas of the body, allowing for pain-free treatments such as minor surgeries, dental work, or injections. Its fast-acting properties make it suitable for quick and efficient pain management. Additionally, it is sometimes applied topically to relieve discomfort from skin irritations or superficial wounds. Due to its effectiveness and relatively low toxicity, it remains a reliable option for localized anesthesia in clinical settings.