It generally takes 15-30 minutes after a pre-numb application for clients to feel the effects of the numbing treatment prior their tattoo or permanent makeup application. 
Using a plastic film wrap can maximize the absorption of the numbing cream and decrease the process time.
Plastic film wrap has a cutter attached to the box for easy tear off. Each roll measures 42mm to 200m.
Follow each numbing cream instructions carefully. Each anesthetic has its own processing time for numbing.