How To Use Steamers: -Before use, let warm water run for several minutes to moisturize the air. -Place the steamers away from the water and the drain. ideally, only the bottom of the tablets should be wet. You can also put a shower steamer into a soap dish. -Breathe in deeply as the essential oils vaporize into the air, and enjoy the aromatherapy. How long do shower melts last? -They will last three to four showers, depending on the placement in the stall, exposure to direct water and length of shower time. Can you use a shower steamer as a bath bomb? -The answer is no. Its not safe to use shower steamers as bath bombs due to steamers are meant to infuse the air with essential oils and aren't suitable for skin contact. -Essential oils aren't water-soluble, meaning if you add them to the bath water they pool on the surface, which can lead to irritation and skin rashes. -Bath bombs are usually made with an emulsifier that distributes the essential oils safely into the water. Shower steamers, however, don't contain that emulsifying agent.