This product is applied directly to the underarm to suppress underarm sweat. The film has strong adhesion and stayed in place all day. The film has a sponge attached, which absorbed sweat effectively. I used to use this product, but I no longer do, so would you like to try it? There are 8 sheets (4 uses). Although there are no instructions on how to apply it, it's easy to apply if you peel the film in the direction of the arrow.