Teeth whitening strip whitening is comparable to the professional teeth whitening. The only tip that you should take care of it is to repeat its use every three months while professional teeth whitening last for one year or more.
In each unit of teeth whitening strip, there are two strips one for the upper jaw and other for the lower one.
Just stick it to your teeth for 15 minutes, strips have potent teeth whitening agent, when you stick it to your teeth it acts upon the teeth for stains removal.
After use, brush your teeth and gargle properly.