Opalescence 35% Teeth Whitening Gel Refill Syringes, with PF (8ct) 5404-4

I was honestly impressed with the results. I noticed a visible difference after just my first 1-hour session. The whitening was noticeable right away, and my teeth looked brighter without having to wear the trays all day. I experienced only minor sensitivity, which was actually less than the 10% gel my dentist previously prescribed. I was never even given the option to try a higher concentration, and I’m glad I found this instead. The biggest advantage is the treatment time. One hour is perfect. Ain’t nobody got time to wear whitening trays for 6–8 hours! This 35% gel gets the job done much faster while still being comfortable. If you’re looking for professional-looking results at home with minimal sensitivity and a convenient treatment time, I definitely recommend giving this a try. I’ll be buying it again.

Great for whitening!

Great product, really does a great job at whitening your teeth and the white lasts long just like treatment at a whitening center. Does make your gumline a lil tender so be careful not to let it sit on your gums. Overall glad I got it great product. Does it's job well

I love this whitening gel! I've been using it for some time, and I frequently get compliments about my white teeth. I have fitted trays that I got from a dentist years ago, which helps greatly, but the gel is highly effective and you don't have to wear the trays very long -- I can pop in my trays, go out for a walk, and be done by the time I return. (Personally, I never liked the overnight gels -- I prefer stronger whitening products that you wear briefly during the day.) In addition to being effective, the gel does not cause the gum sensitivity that I have experienced with other products (unless you leave your trays in WAY too long, of course). I will definitely continue to purchase this product!

Couldn’t really tell a difference. I didn’t really stick with it. But my younger sister tried it and her teeth look stunningly white. And she’s a smoker. I was shocked. They really do look stunning. We’re both in our 50’s.

It does work somewhat as far as whitening but as soon as I put it on with my Invisalign there was a foaming crackling sound and it was super uncomfortable and I wanted to take off the retainer straight away but I barreled through. Taking it off 25 min later I see my gums are white, swollen, and irritated. Probably won't get this strength again !

These work very well. After trying almost every whitening strip out there, this started whitening my teeth after the first use!

Works good but you definitely have to do more than one treatment. And if your teeth can stand it, try and keep them on for the entire hour.

It came out clumped together and not in a smooth gel consistency or a watery consistency. I used it it kind of worked but won’t be trying it again. I think it maybe wasn’t stored properly before? Also it burns your gums sooo badly you have to be careful.