 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  that works by causing temporary numbness/loss of feeling in the skin. Menthol works by causing the skin to feel cool and then warm to distract you from feeling the pain and itching. How to use Benzocaine-Menthol Aerosol If you are using the over-the-counter product to self-treat, read and follow all directions on the product package before using this medication. If you have any questions, consult your pharmacist. If your doctor has prescribed this medication, use it as directed. Before use, clean and dry the affected area as directed. Apply a thin layer of medication to the affected area of skin as directed, not more than 3 to 4 times a day. Hold the can 6 to 12 inches (15 to 30 centimeters) from the affected area and spray on the skin. Do not spray on your face or in your mouth. If you need to apply this medication to your face, spray it into the palm of your hand and gently apply it to your face. Do not use on large areas of the body, cover the area with waterproof bandages or plastic, or apply heat unless directed to do so by your doctor. Doing so may increase the risk of serious side effects. Wash your hands right after use unless you are </s>