This product and most Clear Eyes products have worked really well for me. One of the most important things when using this product is you have to expect it to sting for a split second after you put the drops in and they will continue to sting until you wipe off the excess liquid. Once I discovered that I can honestly say these have gotten me through a lot. My eyes were either dry or just tired and these saved my life! I put them in in the morning before school and they last me throughout the day.