I've never used a peroxide system, and just used for the first time my contact lenses after cleaning with Bausch & Lomb Easysept. Immediately burned my right eye as hell and has become bright red, it has incredibly hurt. Of course, I have taken out the contact lens immediately, and flushed my eye with the supplied solution of NaCl. WARNING: Obviously, you have to these peroxide using the supplied storage case used as the peroxide escapes through the catalyst in this jar for 6 to 8 hours. They must not another jar USE THE SO a catalyst has not !!!!! I have a few days ago when I last used, just like always done my contact lenses in a jar, that I had - I did not realize that this is such a serious mistake. I had read the item description, and complied with by far the 6 to 8 hours - I had the contact lenses used last days ago. I think it would be useful (very very useful) if Amazon would perform such a warning clearly in the product description, or better yet, the manufacturer warns on the bottle that you should use the product MUST use the supplied jar.