These little gems are like a bath fizzy for your shower. Their sole purpose is aromatherapy. Made with menthol crystals, eucalyptus and peppermint essential oils. They are conviently packaged so you can use them as they are. Place in shower away from direct contact with water. Place on a shelf as close to your face as you are able. This helps with essential benefits. The more direct contact with water, the faster they dissolve. Not intended for use with children.