5.5 oz. | Our Shower Steamers are the shower alternative to bath bombs! Sinus Relief utilizes peppermint and eucalyptus to help clear up sinuses so you can breathe easy. Open package and place Shower Steamer on the tub floor where steam and water will cause it to melt slowly for a relieving shower experience. Ingredients: Baking soda, Citric acid, Epsom salt, Essential oils (peppermint, eucalyptus).