Stérimar's natural isotonic formula is free from drugs, steroids and preservatives, making it suitable for daily use from 3 years and up. This isotonic solution has the same salt concentration as cells in the human body. Daily use can help improve breathing and so enhance the quality of sleep. Stérimar's Breathe Easy Daily helps prevent ENT disorders by strengthening the nasal lining's defences. It is available in 100ml cans.