Opalescence 20% Teeth Whitening Gel Refill Syringes, with PF (4ct) 5402-2

I just bought this 20% strength kit after having very painful experiences with 45% and 35% strengths of Opalescence. I find that the 20% version is much more tolerable without the stinging pain of the others. Also, the 35 and 45% strengths turned my gums white after only 10-15 minutes, and there was residual discomfort that would last for 1 or 2 days. Obviously, the 20% may require longer wearing time to obtain whitening results, but that’s a small price to pay to avoid the pain and possible gum damage.

I got the 22% and the 33%, both work great! Only one I’ve seen results after two treatments. I smoke and drink coffee and occasionally dark soda, so my teeth weren’t very white but now they don’t have that yellow tint and are starting to look “normal” white. I did one treatment each strength a week apart, no sensitivity. Just remember that these are maintenance products and might not give you that glaring white like from professional results.

Tried a few whiteners over the years but this is worked better than any of them. Convenient and Easy to use with a retainer.

The gel works. But i use it with my mouth tray made for periodontal gel. One syringe is adequate for two treatments. Only use a small dot on front teeth. More is not needed. Read instructions and leave on according to instructions for strength. Happy to find this. Much better price than dentists and same product. Absolutely no sensitivity.

I had professional teeth whitening done at my denti$t's office and the result was meh. I decided to try it at home using these syringes of bleach and my LED face mask for blue light. With the initial use, I had a better result than the one I had when the dentist bleached my teeth. My teeth are noticeably whiter. I went conservative and bought the 20% strength and left it on for 14 minutes with the blue light on medium---I'll use that as a baseline. No gum irritation & teeth aren't sensitive, so I will cautiously increase the times by one minute and the level of blue light. * Good tip is to use a generous amount of lip balm before you "Light up".

This item works!! This can cause some sensitivity, so maybe skip a night or two. It’s being used with daughter’s retainer. This was recommended by the orthodontist and I’m happy with the results.

Excellent product!

horrible. This was so thick and dried up wouldn't even come out of of the tube. Couln't even use. Waste of money