Teeth Whitening Gel Refill for Trays (1 Tube = 33 Syringes!) - Gel Compatible with All Led Lights, UV Lights, Blue Lights and Invisalign. 44% Carbamide Peroxide

I am so glad that I bought this whitening gel after reading the reviews.My order arrived on time and it was well packaged. I wasted no time in opening it up and after reading the instructions decided to try the gel out the following day.I brushed my teeth as usual the following morning and air dried them. I then applied some gel to each of my teeth, being careful to avoid the gumline. I air dried my teeth after application for about a minute and waited for the prescribed time on the instruction sheet before washing the gel off my teeth.I thought I saw some improvement after first use and was excited; but thought I’ll wait until a few more days of use before making up my mind. After using the gel for another couple of days I knew for sure that there was a definite improvement in the whiteness of my teeth. This gel really works!!I am so happy that I can now give a wide smile anytime I want without worrying about the tea stains on my teeth. I am happy to recommend this gel for others to try.

I've been using the pricy, "hypodermic"-style whitening gels for 3 years every month or two to keep my teeth a little brighter. They are overpriced, difficult to use, and impossible to REUSE because when you try to add a drop of whitener to the tooth tray with a previously opened syringe, it is invariably stuck and you waste half the product when it finally blasts out all at once. I'm not an engineer but the obvious design flaws were maddening; the reality is that with the whitening syringes you get a tiny amount of whitener gel and a complicated, inefficient delivery system to justify the price point. Stupid!I found Advance when I was grudgingly ready to reorder another batch of the syringes; not only is it a superior product with more whitening power than what I was using (44% vs. 35% Carbamide Peroxide) at a lower price but it is SOOOO easy to use! You simply cut the tip off to create a tiny hole and it delivers one drop to each tooth compartment perfectly and then put the cap on. Simple. I haven't had it long enough to see how it works after it's been opened but the tiny hole you cut on the tip would let you poke in a needle if it should happen to gum up.

The product arrived oozed out all over the inside of the box , there was no padding and the tube burst due to pressure on the box during the travel I suppose, was a mess. I was sent a replacement after about 3 weeks, after contacting customer support twice. I was also refunded for the original damaged item... so I was definitely taken care of by the company, but it did take two times of reporting the issue.This product is super! I love it and have been bleaching my teeth for years, happy to have found this!

I’ve been using teeth whitening gel for over 20 years and have never used less than a 35% carbamide peroxide solution. I ran out of my previous gel over a year ago and when I tried to reorder it was no longer available. I decided to try this 44% carbamide solution. The first day I had my trays on for 30 minutes but no change in tooth color. Second day I kept the trays on for 1 hour. Still no difference. Third day 90 minutes but no color change. This gel might have 44% carbamide peroxide solution in it but it’s so diluted by all the other ingredients that it has not been effective at all for me. It didn’t even irritate my gums as previous gels have if left on too long. Will be returning it.P.s. Please follow the instructions on the tube and do NOT use the gel for as many minutes as I did. I might have received outdated gel which is why it didn’t work. This was my experience but it might be different for you.

I have used this product for about 12 days 25 - 30 minutes daily and about half of those days' morning and evening. I believe there is a slight "whitening" of my teeth but that may be wishful thinking. The taste of the product is not unpleasant or pleasant which is to be expected. I have used Crest whitening strips several times and the new Crest stuff you put on the teeth to let them whiten over night and saw no improvement at all. So saying there may be a slight "whitening" is a big improvement. Will I purchase this product again? Yes. A slight improvement if far better than none and it is a lot cheaper.Bought another tube. I can say this stuff works. Took a lot of money and many days with plastic in my mouth with the other stuff to figure this out. But it certainly does what it says it will do. Glad I purchased this instead of wasting more money,

It works! I have been whitening my teeth for several years. Usually, I purchase the gel from my dentist at about 10$ a tube. When I spotted this on Amazon, and the reviews were so positive, I figured I’d give it a try. I used the 44% for over a week and did not notice a difference. I contacted customer service and within a couple of hours I was given some guidance. I needed to use for 14 days and leave on for 30 minutes. They sent me a new tube in case the one I had was an old batch plus the lightening pen! Plus, they wanted me to try the lower % gel which some people achieve better results with. I followed directions and tried both percentage s and the lower percentage worked better on my teeth. This company stands by their products and wants their customers to be happy too. Well, I’m beyond happy and will not use any other product. Thank you thank you for such personalized service!!!!!! I now have a happy white smile!!!!

I don’t have AC and this product went bad within 1 month. The storage temperature for this is very narrow. My apartment went up to 80F and all of this went bad.