A proprietary Ayurvedic formulation, Medigrip Pain Relief Plaster is used to produce heat on undamaged skin. Now you can bid goodbye to messy pain relief creams and use it everyday under clothing! The plaster is perforated evenly & the adhesive surface is protected with silicone paper. Ensures controlled release of pain-relief herbal extracts for up to 12 hours. Hence, you do not need to keep re-applying every 3-4 hours. It doesn't get peeled off under clothes.