Sarah happily reported she saw results and said she thinks they would have been even more noticeable if she'd been able to use it as many times as directed (the packaging says 10 to 20 times in one sitting; she did six until her discomfort made her stop).
The handheld light was user-friendly, automatically turning off after the prescribed two minutes. Sarah said the whitening solution was more of a challenge. Similar to a nail polish bottle, it required a steady hand, and she was prone to getting some on her lips and gums, which resulted in a slightly stinging sensation. In general, she was one of our more pleased testers and said she'd definitely recommend the product to friends.
Source: Elizabeth Griffin/Hearst