"Potters Allerclear Eye Drops are a sterile, preservative-free moistening solution for irritated eyes, containing the herb Eyebright. The osmotic pressure of Potters Allerclear Eye Drops is matched to that of your own tear fluid. Regular use will relieve or eliminate irritation and dryness caused by small particles e.g. dust, pollen, and air pollution. The drops are suitable for all contact lens wearers, particularly those with sensitive eyes and for children."