How obvious do 6 month braces look? Is the appearance of 6 Month Smiles clear or invisible? Some people, when asking Seattle cosmetic dentist Lance Timmerman DMD in Tukwila to straighten their teeth, are afraid of how obvious it will look and feel that Invisalign is the only option for aesthetic orthodontics. By using tooth colored brackets and tooth colored wires, 6 Month Smiles is almost as invisible, but with much more control and usually a shorter treatment time. While every case is unique, the average treatment time with 6 Month Smiles is (wait for it…..) 6 months. It is not just a clever name. Invisalign is usually 12-18 months. This isn’t bad, but 6 month smiles can be put on at a routine cleaning visit and come off when due for the next one. It is THAT fast.