Same as the dentist!
Same system my dentist uses! Plug it in. Apply the magic and walk away with white teeth. Taking away one star for the process to re apply 4 times per session. Still faster than the appointment and drive to the dentist. Add another touch up weeks later for even brighter white. Slight tenderness but minimal at most. Lip gloss is a must during applications to decrease skin irritation.
Rating: 4 stars