D.I.Y)10 Thermo-molding "BOIL and BITE" Mouth Trays by Instant White Smile Wholesale

These worked great for me, and I got a good set of trays the first try. I initially bought the Shine Whitening with Zero Peroxide that came with a set of trays. I had never tried whitening my teeth before, and the directions that came with the kit were not very good. This set looked pretty deformed. Once the plastic got stuck together, there was no getting it apart.I ordered this set to give it another shot, and got a good set of trays on the first try. I filled a glass measuring cup with water, and put it into the microwave for about 1 1/2 minutes until it was boiling. Then I held the first tray into the boiling water for 6-8 seconds until it was just starting to soften. I let the excess water run off of it and put into my mouth on the bottom teeth being careful that it went over the teeth. Then I sucked in my cheeks with my mouth closed. This pulled the tray up to my teeth. Then I used my fingers to make sure that the tray was formed to my teeth, took it out of my mouth, and rinsed it with cold water.I did the same thing with the second tray without re-boiling the water, and put it on my upper teeth following the same procedure. Again, I had a perfect tray. I think the problems happen when the trays are left too long in the hot water. This will make them too soft and limp. If you try to shake off the excess water, the soft plastic will stick together and you will never get it apart - especially if you got it too soft.In summary, to get perfect trays the first time, do one at a time, don't leave them in the hot water too long, don't shake off excess water (let it run off), and suck in your cheeks to pull the forms close to your teeth.

The trays are way too bulky and therefore can NOT confirm to the teeth except as a loose tray. We're not long enough to cover back teeth either. Worse of all, they are NOT RETURNABLE so I can't even get refund. They are cheap, but any dollar spent on something useless is a waste.

These worked great for me. I followed the instructions posted by other reviewers. Boil water and then pour it into a cup. Hold the mouthpiece by the tab and dip it into the hot water. Hold it in the water no longer than 6 to 8 seconds. The second you see it start to slightly droop, pull it out, let the water drip off for a second and then put it in your mouth biting down with your teeth and sucking in your cheeks. This will mold it to your teeth. But it's important to understand that these are not like custom trays you would get from a dentist (and pay hundreds of dollars for). They are not going to perfectly mold to your teeth. That's not really their purpose. Their purpose is just to hold the whitening gel against your teeth. These are very thick and bulky and on the hard side. They're not the most comfortable things in the world but again, they're not really supposed to be. They are really only there to hold the gel against your teeth. Following these instructions, my trays came out perfectly every time.

I had a hard time getting the plastic to a sufficient malleable texture. It either wasn't soft enough or too soft and folded in in themselves, rendering them useless.. I admit this may be user error, but what "should have been simple enough" took 4 trays in the garbage before I finally just gave up. I'm sure they would work well as whitening trays if you have better success at making molds out of them than I did

Was not able to mold easily had to take several times to get an okay molding of my teeth. Okay product for price . Plastic a little to thick. Good quality I just feel plastic a little thought to work with the first time. Eventually got molding of my teeth .

They work perfectly, if you do it right. These trays are made from a very soft, pliable material. When dipped in water that is at a rolling or near rolling boil the tray will almost immediately shrivel, rendering it useless. I followed the instructions of several previous reviewers who essentially said: Fill a glass quart measuring cup with water and put it in the microwave for about two or three minutes, depending on the strength of your microwave - *remember - hot, not boiling water.* Dip one tray into the hot water for about six seconds (don't over do it) then put it in your mouth and kind of vacuum seal it around your teeth by sucking the air from between the tray and your teeth. If the tray does not get quite as tight as you like, dip it in the hot water again, for a couple more seconds, and repeat. This works for the upper and lower trays. Honestly, my first attempt at fitting the trays was not great - not terrible either - but not great so I had to give it a second try. The second set was perfect. When I helped my husband with his set, it was perfect the first time. I was very happy to have five pairs of trays - an extra for practice. I have been using these with, Watts Power Deep Stain 36% Whitening Gel, followed by, VitaBrites Remineralization Gel and am absolutely thrilled with the results - for myself and my husband. For nice, white, healthy looking teeth, the price is outstanding!

I'm currently using teeth straightening aligners and can no longer use the $500 bleaching trays from my dentist. I was looking for a low-cost alternative while my teeth are still shifting into place. these trays fit the bill. I was a little concerned after reading some of the negative reviews, but the tips the other reviewers left were spot on. I didn't boil my water, I just put a coffee mug with water in the microwave for two minutes and then held the first tray in the water until it began to droop and curl (around the count of 15) I placed the first tray in my mouth and sucked in my cheeks, the tray molded to my teeth perfectly. once the trays cooled, I put my bleaching gel in as usual and I could feel the gel start to bubble and work right away. I'm very happy with this purchase.

If your teeth were perfectly straight these might be ok- although thick. These will not form to teeth properly no matter how many times I put them in hot water and tried to make them conform.