Crest Supreme extra strong teeth whitening strips are the strongest teeth whitening strips on the market containing 14% peroxide.
 
2.5 x stronger than the leading brand. For reference, the popular Crest 3D white strips are only 5.5%
 
Each pack contains 2 strips - 1 top and 1 bottom.
 
A course of daily treatments is recommended until you receive your desired teeth whiteness.
 
After that, weekly or monthly maintenance treatments are sufficient.
 
May cause sensitivity and temporary white spots on teeth.