35% Carbamide Peroxide Teeth Whitening Gel Refills, Sensitive Teeth Whitener, Works with LED Light and Trays (10 X 5 ML/CC)

This gel works well. Lesser percentages didn't work so well for me. I bought these again because I like them and it's a good price. I dislike synthetic chemicals and the like, but it works well and doesn't bother me for 10 minutes at a time and it noticeably whitens my teeth.

The gel works well and is at a fair price point. My complaint is the lack of a more refined tip to use when applying the gel to trays. None were included and that makes everything more difficult and messy.

Work beautifully- smiling all the time 😁

In the past I've been asked if I smoke but I don't. I've been wanting to brighten my teeth but wasn't sure which percentage would be appropriate. If you don't want your teeth to light up the room and just look natural go with 35%. I used it this morning and was perfect. Not too bright, very natural. Highly recommend!

I used this product the day before yesterday in my upper whitening tray. I used up the last of the 35% whitening gel I already had in the bottom tray. The bottom try worked liked usual - I could see it foaming a bit on the teeth because my whitening trays are transparent. My bottom teeth were noticeably whiter after 30 minutes, like usual. For the upper teeth with this new gel - no foaming at all, zero whitening, but oddly my upper teeth have been a little numb for almost 2 days now. I have no idea what is in these syringes! It's possible they haven't been stored properly - excess heat or simply expired and have entirely lost their strength. I bought this product only because I'm familiar with the names Dentech and Brite White and regret the purchase. Back to the drawing board. Thank you Amazon for the easy return/refund!!

Does the job for sure

A good product for the price.

Whitened as it said with once a day use for a week. Used with light tray. Did not cause any sensitivity.

I use this in my custom fitted teeth trays and it does the trick. Gooey gel stays nicely in the tray and adheres to teeth as it should. Why pay the dentist when you can do it cheaper at home whenever you want?

Great price , works excellent

I love that I could order 10 refills of the gel at one time. It whitens my teeth and I like that it has a minty taste

This works amazingly well, if you have never bleached your teeth before, just be aware that it is strong, use it sparingly, & leave on, for an hour at the most..you will see results immediately. It can burn your gums, so just put some Vaseline on the spots that are effected before putting the trays in..

They blistered my gums!! Painful and probably borderline legal. Cheap and nasty. (And I mean cheap - they arrive in a plain zip-lock bag.) A truly awful experience. Avoid like the plague.