How to Whiten Teeth in Photoshop

Above is a Photoshop technique to whiten teeth on digital photos. This is a useful skill to learn and how to touch up your photos. As an aside, I have yellowish teeth due to tetracycline stains. When I was young, I fell sick and the doctor gave me a banned drug tetracycline, an antibiotic that should not be prescribed to kids under the age of ten. It not only caused stains to the teeth but to all the bones as well. I have tried other methods of whitening my teeth such as buying expensive teeth whitener with retainer to apply for at least 1 hour without much improvement. So, now if I were to have my photos taken, I don't show my teeth.