Propoxycaine hydrochloride is primarily used as a local anesthetic in medical and dental procedures. It works by blocking nerve signals in the area where it is applied, providing temporary pain relief. In dentistry, it is often used for minor surgical procedures, tooth extractions, or other treatments requiring localized numbing. Its fast-acting properties make it suitable for short-duration procedures. Additionally, it may be combined with other anesthetics or vasoconstrictors to enhance its effectiveness and prolong its action. Outside of dentistry, it can be utilized in minor surgical interventions or diagnostic procedures where localized anesthesia is necessary.