Numstick is a handy stick that can be applied often in a 15-30 minute period before lip procedures. It is for single patient use only and is good for 3- 4 procedures. Your client can apply on the way to your office. Follow with a SECONDARY anesthetic such as Duracaine or PC Gel when skin is broken. 5% Lidocaine ointment . Numstick also STOPS Fever Blister pain FAST! Apply only to affected area as needed.