All sales are subject to product availability. Shower Bombs are an effervescent treat for your shower time. Simply unwrap and place the shower bomb on the shower floor or a shelf where water will hit it, but not drown it out. Water activates the shower bomb creating an effervescent aroma in your shower. Enjoy! Respiratory Sinus is our own Salus blend based off Young Living RC formula. Our Respiratory Sinus is a blend of pure and natural essential oils of eucalyptus peppermint lavender cypress pine and marjoram. How to Use: Unwrap, and place your shower bomb on the shower floor, on a shelf or in a mesh hang bag. Your shower bomb needs water to activate and release aromas, but too much water can drown out the scent and cause your shower bomb to quickly dissolve.