I've been using Clear Care solution for over a year, and sometimes, the solution foams right out of the container. Previously, I thought maybe I was wearing them for too long and they were really dirty or something. This month, the lenses are only two weeks old and it's foaming out of control to where I have to refill the container once it stops foaming. Does the black thing in the bottom of the holder expire or does the solution go bad or something? I change the case out with every bottle I get. Why does this happen?
>>> Clear Care contact lens solution foams too much?