I wear hard contact lenses for many years and have tried various retention solutions (most recently the normal combined solution of Eyelike, with which I was happy to be.) Since I'm very nearsighted, I wear the lenses loose 15 hours a day. Especially in winter, when dry heating air, it was normal for me that the lenses have felt gritty during the day and I had to ever take eye drops to moisten. The Hyaloron solution I have for the first time only bought because the normal solution was just out I was extremely skeptical of the (then new) universal panacea Hyaloron over and have not seen it, to have to pay a higher price for a marketing trend , According to my surprise that I could actually notice a difference in comfort my lenses and may: Even when inserting the lenses in the morning feeling fresh at the sandy feeling arises only very seldom during the winter a. I use the solution for storing, for cleaning my lenses I use the hard lens cleaner from Eyelike, for rinsing normal tap water. The 360 ml bottle lasts me so about 3 months and is therefore priced a genuine alternative to expensive premium products from opticians.