Wow, that's like a lifetime supply! I bought a whitening kit a year and a half ago and the syringes are still there so my husband wanted to whiten his teeth too. I took a chance on them because they were cheap and I figured if we screwed one up there would be so many others to get it right. Well, if you follow the instructions, it's very easy. Boil water in a measuring cup in the microwave. Then he dipped the tray in water for a few seconds, took it out, shook it, put it in his mouth and sucked on it. Then he pressed it firmly against all his teeth with his fingers. You can then trim off the tongue and excess above the teeth. TIPS: Cut slowly, removing a little at a time. You can always remove more. I cut part of my molars because I don't whiten my molars and it helps with the gag reflex. The less time in hot water the better, you can always dip it again when you need it softer. However, if you let it stand even a second longer, it will collapse. Hope this information helps. If you have any questions please leave a comment below and I will try to answer.
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