Add punctuation to the following sentence: By using low temperature coldlight avoids any irritation of the teeth nerves Beyond is a onetime treatment with no irritation and no side effects whitening the teeth for up to two years Beyond is recognized as the safest and most effective way of whitening the teeth currently available
By using low temperature, cold-light avoids any irritation of the teeth nerves. Beyond is a one-time treatment with no irritation and no side effects, whitening the teeth for up to two years. Beyond is recognized as the safest and most effective way of whitening the teeth currently available.