Pros: expensive but it worth it
Very efficient and effective method of whitening teeth!
You can actually see the results in 3 days , after using it !
Pros: Less Time
I was so excited to make the purchase. I have been a faithful user of Crest Whitestrips for well over a year. I couldn't decide to buy the Professional Whitestrips vs. 2 hr Express. After deciding to invest in the 2hr Express, I ended in disappointme...nt. I like the idea that you only have to use one per every 3mths vs the others where you have to wear once a day for a month. Although, after using my one set for the 3mth period I didn't see my teeth being any more white than before. Another problem I seem to have was the pain that was induced by wearing for an extensive amt of time....2hr vs. 30 mins on the last packages I have purchased. It seem the longer I wore them the worse the pain got on my teeth. I thought it was a very expensive purchase for the quality of the product. If I purchase whitestrips again I will go back to their original products. They are the best compared to this last purchase ! Read more Less
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