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.

This high-strength whitening gel works remarkably fast to lift years of coffee and tea stains, delivering noticeable brightness in just a few short sessions. The sticky, viscous consistency ensures the formula stays put in your trays without sliding down onto your gums. However, because of the powerful 35% concentration, you need to be precise with application and mindful of wear time to prevent any zingers or gum sensitivity. It is an unbeatable, professional-grade option if you want dentist-level results at home.

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!

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

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.

Great for whitening!

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!

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.