how long do the results last after using sephora gosmile for about a week? i'm so tempted to buy it but it's super pricey.
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I honestly don't know, BUT I do know that alot of those super pricey tooth whitening products out there work no better than alot of cheap techniques. You could try baking soda, that's cheap and lots of people use it. Also, there are pretty cheap whitening gels that work good-I use one that's only about 5 bucks and it works greaaat! Lastly, Crest Whitening Toothpaste is great. I think it tasted much better than others too! Good Luck!
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