A smile has the power to even win over enemies. However, if your teeth are dark or discolored, you’re not confident to offer a smile to others. Teeth have typically two layers; enamel is the thin outer layer which is whitish and below it is the dentin that forms the bulk of teeth and is darker. The teeth can become stained with age and/or due to caffeine, tobacco, etc. Teeth whitening is the procedure wherein the discolorations are removed and it can be undertaken using various methods. Opalescence kit for teeth whitening is the most popular teeth whitening process due to its numerous advantages.