The tear product containing HP-guar, PEG 400 and propylene glycol satisfies several pre-clinical criteria for an appropriate artificial tear formulation. It gives long-term desiccation protection of the intact cornea and also epithelial cells in culture and has no apparent deleterious affects on cells. It also provides conditions in which a damaged corneal epithelium can recover normal barrier function. The combination of ingredients in the formulation appears to provide an effective mucomimetic artificial tear product. These pre-clinical data suggest that the product will be effective in providing superior relief for the dry eye sufferer.