Our 30g Zensa 5% Lidocaine Cream is designed to work on the skin. It works by numbing the surface of the skin for a short time and is applied, where appropriate, before certain Plasma Pen procedures to help prevent any pain sensation on the skin although feelings of pressure and touch will likely remain. Zensa contains a raft of health-conscious ingredients including purified water and Vitamin E which provide anti-inflammatory properties. It has a neutral pH and is arguably the most natural numbing cream on the market plus with a three-year shelf life, it is probably the most stable topical anaesthetic available. Keep refrigerated and completely avoid contact with the eyes.