I signed up to get my teeth whitened here through a meetup event. Annie met me at my reservation time and was extremely friendly. She explained exactly what to expect and was really sweet to make sure I was comfortable and had everything I needed.
It takes about an hour for 4, 15-minute sessions of teeth whitening. You just sit in a chair, Annie puts the product on your teeth and aims a blue light at them. Totally painless and absolutely worked! My teeth are nice and bright and were already pretty white to begin with.
You're able to eat about 30 minutes after having it done. My teeth were a tiny bit sensitive for about a day but nothing like they are after using whitening strips.
I definitely recommend giving it a try!