GLO Science Brilliant Teeth Whitening Gel Treatment Refill Vials, Mint Flavored, Clinically Proven to be Sensitivity & Pain-Free and Give Long Lasting Results | 3 Count (12 applications)

This product is an improvement to other whiteners I've used. The gel is a bit thicker than most gel whiteners, making it easier to apply to specific areas. A small issue with the cap: Would be advisable to direct customers to pull lid straight off, without turning the lid. I inadvertently turned the cap & this caused the top brush area to break. Do not hesitate to try this gel - it does work - it's the real deal.

Hard to roll out when full

Works well with a blue light mouthpiece, not so much using it alone. I bought a different brand blue light and it works the same. No need to buy their overpriced light to use with the whitening gel. Does take a minimum of three 10 minute sessions (spaced mine out over the day) to see results but it does whiten with blue light. No tooth sensitivity, a little gum sensitivity after several uses, probably because I applied too much. Will purchase again.

GLO is certainly the best of the best! If I am going to purchase teeth whitening products online and not from my Dentist I want the company/formulation to be safe and reputable. This company checked all those boxes and my Dentist gave it the go ahead. I have also had in-office dental whitening such as Zoom and others throughout the years. The formulation is not harsh or irritating. It is easy to use, works quickly, and whitens better than other brands that I purchased at Sephora/Ulta. I loved these products for touch-up or travel. I also purchased the GLO kit with mouthpiece/whitening gel---that is a 5-star product, too! Could not be happier with both products.

This is my second purchase! It’s a bit pricey but these do work. It’s suggested that I use for 3 days but the first day, I can tell the difference already.One thing I don’t like is that you have to really squeeze out the product. I end up taking the top apart so I can get all the product out from the bottom, wish they made it easier to squeeze out!

Have only used whitening strips up to this point and felt they worked rather well. Decided to try a different out a system since I don't get the full teeth coverage from the strips. After reading a ton of reviews on all the available options out there, I decided to give this system a go. The day after the package arrived, I dedicated that day to the first round of the 3 day trial. The directions states to use the system 3x's daily to get results. Disappointingly, I followed the directions to the "T" and it yielded 0 improvement on the first day. ZERO. No white spots or anything. I mean come on, at least give me something so I can follow through with the remaining 2 days! I reached out to Amazon for some kind of return, but to my delight, this items falls under the "Hazardous Materials" category thus not eligible for return... Total waste of time and money! You can do better else where.

I ordered this item mistakenly thinking that it was for my heated GLO Science unit. It is NOT for that application. So I'm out $24 plus tax. Tried everything imaginable available to me with no luck. Throwing it in the garbage. Also, the packaging looked a bit old and both seals were open - one on each end.

I had my teeth whitened by dentist about 6 months or so. I am trying to maintain what had been done already. This product is painless and easy to apply. Plus, it’s made out of Hydrogen Peroxide, which in my opinion is safer for enamel. H2O2 will just change to H20 and CO once exposed to air. I don’t use this everyday. Only when I have eaten or drank highly colored food.