Dr. Scholl’s Blister Pain Relief Complete Kit provides instant effective relief for painful blisters. Maximum strength 4% lidocaine the pain-relief patches numb discomfort on contact. These patches deliver up to 12 hours of clinically tested relief to keep you comfortable all day. This unique kit is the only blister treatment with an active pain reliever offering unparalleled relief. The Hydrogel bandages seal and cushion blisters creating an optimal healing environment and protecting against further irritation. Complete with both pain-relief and protective patches this comprehensive kit offers everything needed to treat soothe and safeguard blistered skin on your feet. Recommended use for blisters.