6. Crest Whitestrips ® Classic Strip

Probably, Crest Whitestrips Classic is the best choice for the first time user who have never used a whitening strips before. It has the lower cost and long-lasting white smile. These strips contain 6% Hydrogen Peroxide. The low concentration helps to insure that the whitening process will produce an even color change and minimize the likelihood of bleaching side effects. However, the lower concentration whitener will need to a longer time ( about 2 weeks ) than other strips ( typically 1 week ) to produce results. Now, the Crest Classic had upgraded to Crest 3D Whitestrips Vivid which has 10% Hydroxide Peroxide.

Crest Whitestrips ® Classic

Crest Whitestrips Classic Strip is same as the Crest 3D White Whitestrips Gentle Routine. However, you have to have it on long. Two 30 minutes per day, and Gentle Routine only need 5 minutes per day. The good news is Crest Classic just save money than Gentle Routine.

    Disadvantages

  • Can cause stinging and burning
  • No wide, only cover front teeth
  • Can bleach clothing if not careful
  • Takes more sessions to be effective
  • Won't remove more severe stains

    Advantages

  • Easy to wear
  • Gentler
  • Surely get whiter teeth