Eucalyptus & Menthol shower SteamersVery large. Think the size of your palm Highly Concentrated Essential Oils and menthol! These are made with 100% pure eucalyptus essential oil and Menthol. Eucalyptus Essential Oil is known to help with congestion relief, headache relief, sinus relief, mood enhancer, stress relief, soothes mind, and more! Each shower melt fizzes in the shower for about 10-15 minutes to give you amazing aromatherapy benefits! To use: Place shower steamer on bottom of shower out of direct stream of water and enjoy the aromatherapy benefits as the steam carries the oils throughout your shower. This product has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.