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Description
MammothThe original, unforgettable and thought provoking new novel by award winning author Chris Flynn that will change how readers understand the world. Narrated by a 13,000 year old extinct American mastodon, Mammoth is the (mostly) true story of how the skull of a Tyrannosaurus bataar, a pterodactyl, a prehistoric penguin, the severed hand of an Egyptian mummy, and the narrator himself came to be on sale at a 2007 natural history auction in Manhattan.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.2 ★★★★★
Based on 1396 reviews
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Product Reviews
★★★★★ 5
It works!
I tried these on my teenage son who has pretty yellow teeth after braces. You can’t really tell in pics but in person they made a difference. He hasn’t had any odd side effects or sore gums from using them and said they were easy to use. He wears them for the recommended amount of time although started lower the first time to make sure he wasn’t allergic or anything. But so far great product and we are happy with it!
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Reviewed in the United States on February 1, 2026
★★★★★ 4
Work about as well as drugstore brands.
These are at least as good as the national brands at a fraction of the cost. They stick on easily and used as directed will whiten your teeth a few shades over the course of treatment.
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Reviewed in the United States on December 5, 2025
★★★★★ 2
Combersom
Cumbersome, does not hold 3nough water
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Reviewed in the United States on May 25, 2026
★★★★★ 3
Mixed Results
These strips fit comfortably and don’t slide around, which I appreciated. They are gentle on my gums and enamel, and I noticed a slight improvement in brightness after consistent use. That said, they aren’t as strong as some other whitening strips on the market, so if you’re looking for dramatic results you may be underwhelmed. Good for subtle whitening.
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Reviewed in the United States on October 2, 2025
★★★★★ 5
Does work well for removing minor stains
This product is probably best for removing minor staining - things like coffee, tea, red wine. I don't think it would work for longer-term stains that accumulate with age - the strips are not powerful enough for that.
Very easy to use: just apply and leave on for half an hour or until you can feel that they are no longer well-attached. The "cleaning" process starts immediately - you can see the bubbles form. I am a tea drinker, and I notice immediate effect after putting these on. Don't expect miracles, but they will help with fresh stains for sure.
For me, they do not increase the sensitivity, but my teeth are generally not sensitive. But they are peroxide based, so the possibility is always there that it could have that side effect.
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Reviewed in the United States on November 1, 2025
