How do you use the Crest 3D Whitestrips? Simply apply the Crest 3D whitening strips to your top and bottom teeth for 45 minutes a day. Or, apply the one-hour express treatment to your teeth for 60 ...
How do you use the Crest 3D Whitestrips? Simply apply the Crest 3D whitening strips to your top and bottom teeth for 45 minutes a day. Or, apply the one-hour express treatment to your teeth for 60 ...