Secret Clinical Strength Invisible Solid is our best protection that goes on dry. It absorbs odor to keep you smelling clean and feeling dry. Secret Clinical Strength Invisible Solid also provides 4X stress sweat protection versus the wetness protection required of an ordinary antiperspirant. Did you know that heat, activity, and stress can all cause you to sweat and that stress sweat smells the WORST? That's because stress sweat comes from a different gland, causing more bacteria and more odor. Secret Clinical Strength has Adapts&Responds Technology that senses your sweat levels throughout the day, adapting the level of protection, and helps to stop odor before it starts. Secret Clinical Strength Invisible Solid—incredible protection, no matter what the day may bring.