This product works with no tooth pain!
Last time I had my teeth whitened not only was it expensive, time consuming AND I could not have coffer for three days (OMG), it hurt - a lot!  So I bought Glo really, really hoping for some whitening and little no pain.  It  worked to whiten very well and NO tooth PAIN!!  Plus it  was easy t o fit into my routine, so I give this product 5 stars.
Rating: 5 stars