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All those whitening gels work much better if they stay on your teeth for 10 or 20 minutes. But those trays that are custom fitted to your teeth are really expensive. They can run hundreds or even thousands of dollars.

If you don’t want to spend that kind of cash, you can actually make your own for less than $2. Insane, right?

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These homemade trays are molded perfectly to your teeth, just like the expensive ones. All you need are sports mouth guards and a little hot water. The mouth guards are the perfect place to start because they fit right over your teeth and are made of flexible plastic.


To make them fit perfectly, simply hold the mouth guards in a cup of boiling water until the plastic starts to get soft. Then press them over your teeth and let cool. They will take the shape of your teeth and voilà, you’ve got a set of custom whitening trays.

Jessie Taylor is a freelance writer and crafter who is currently traveling the U.S. in search of her ideal place to live and the perfect cup of coffee. Follow her adventures on Instagram and Twitter.
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