At first I was skeptical like all online aligner companies but I read some great reviews by real patients. I held off for ages until I decided to just purchase them. I am half way through my 5th set of aligners. I have 15 in total and the change already is noticeable, I am very impressed. I’ve noticed my lower more crooked teeth are definitely straightening now. All done from the comfort of your house, very straight forward and simple. The first set took some getting use too and my teeth were fairly sore and uncomfortable. Now a new set of aligners are tight but settle within the day and my teeth are no longer sore. Highly recommend. Very happy, will keep reviewing as my progress continues. Alix