It felt like my glasses wouldn't stop constantly sliding down my nose
I initially reviewed this product as two stars. After a few days using it I stopped because I didn't really notice a difference. I actually noticed much more of a difference after stopping using it. It felt like my glasses wouldn't stop constantly sliding down my nose, I was pushing them up at least once every two minutes. Nerdwax definitely helps in retrospect. It's  not fool proof, you will still find yourself pushing your glasses up but not nearly as often and you will have to reapply a few times a day. I find myself using it about three times from morning till night and having to readjust every 20 minutes or so.
Rating: 5 stars