Introducing Salonpas LIDOCAINE PLUS Pain Relieving Liquid. It’s one of our newest innovations from the world’s leader in medicinal pain patches. Salonpas LIDOCAINE PLUS Pain Relieving Liquid provides temporary relief of pain associated with back, neck, shoulders, knees, and elbows with a combination of Benzyl Alcohol and Maximum Strength Lidocaine*. Benzyl Alcohol is fast acting while Lidocaine is long lasting. That’s two powerful medicines in a convenient, no-mess applicator to provide targeted relief.