LMX4 Lidocaine 4% Cream LMX4 is a new advanced fast acting topical anaesthetic that has an excellent safety profile. It is used to reduce the pain associated with medical needle procedures. It does this by numbing the skin within 30 minutes of application. LMX4 is indicated for Topical anaesthesia of intact skin prior to superficial skin procedures including IV cannulation & blood sampling. LMX4 can help alleviate pain & discomfort associated with cosmetic treatments.LMX4 is a safe & effective anaesthetic cream. LMX4 can be used prior to tattooing to allleviate pain & discomfort.