Using only water, gently wipe with a clean, damp micro-fiber cloth. Do NOT use alcohol or soap as it will break down the foam and remove the "memory". Let the tips dry completely before the next use (approx. 1 hour). Clean your tips only when there is excessive wax buildup on them. Excessively cleaning the tips can decrease the lifespan and cause premature tears. We recommend replacing AirTips Pro about every 3 months or when they lose their "memory". Watch a demonstration of cleaning by visiting here.