We supply a range of "pre-gelled" self-adhesive electrodes. The self-adhesive electrodes can be applied, and will stick, directly to the skin (clean and wet the skin prior to application to aid in conductivity). The average "life span" of a self-adhesive electrode is about two months when used daily. Pads should be placed back on the plastic sheet, and back in the "zip-lock" packaging (it is also a good idea to store the electrodes in the fridge or other cool dark place). Contact us for further information.