I use these drops a lot when I get dry eye. They do work well. I don’t think they stay as lubricated as long as I would like, but there is good relief for at least 30-60 min. I need to buy a new bottle since I used almost this whole bottle. Price is reasonable. I prefer going with a well known brand when putting something in my eyes

One drop in each eye is enough to lubricate them for hours. I work in front of a computer screen all day so they get dry and tired easily. This product works best for me.