Review (1/5): Causes Mouth Trauma
While the device parts operated as they should, the product is a fail. It didn’t whiten my teeth noticeably after the recommended use. However and worse yet, the gel caused damage to my lips and gums. It looks like they have burns on them from the gel being too caustic. I get better results from Crest Whitestrips and no damage to mouth tissue. Buyer beware.