How to use: These tips are for applying AquaBoost Serums. Just attach them and start your treatment. Note: Always clean and sanitize the tips after each use. Maintenance advice: Wash the tip with soap and water first. Use a scrub brush for hard - to - reach areas. Rinse well. Disinfect as per the manufacturer's instructions. Let it dry and store in an airtight container. Each tip can last 10 - 20 uses, but it depends on how long your treatments are and the sanitization method you choose.