Teeth Whitening Kit with Gel Pen: 32X LED Accelerator Light for Sensitive Teeth – Stains from Food Coffee Smoking Wine and Soda for a Bright Smile at Home 0.2 Fl Oz (Pack of 1)

Works well inside invisalign
The little color scale they provide to track what shade your teeth are seemed kinda useless, at least to me. I had coffee stains that were making my teeth yellow and their scale goes from gray to white. It seemed to be a much more blue hue without the yellow that a lot of people probably have from coffee or tobacco. I’m not sure who has gray teeth. I couldn’t figure out what shade my teeth were before or after treatment using that thing, but they’re definitely significantly whiter and everyone has noticed.Couple tips — the universal tray is fine, but for me its circumference was greater than the line traced by my teeth, so if I had it in contact with my front incisors, it was not touching my teeth near the sides. I think that’s fine as long as you move it around a little initially so that the whitening gel is spread onto the front of your teeth. After the first treatment, I switched to putting the gel in my invsalign and just using that and that seemed to work much better and allowed me to treat the front and back of my teeth with the same amount of gel that I was using just to treat the fronts with their provided universal tray. I didn’t bother with the heat-molded trays since I had the invisalign, but I’m sure that would probably work OK too. My teeth are slightly sensitive after four treatments (30 minutes each) and even with using the remineralization gel, which is supposed to help with sensitivity. I only have enough remineralization gel for one more treatment, but enough whitening gel for a lot more treatments. I don’t really understand why their instructions say to use the remineralization gel after each whitening treatment when they don’t actually provide enough remineralization gel to do that. You get 3 tubes of whitening gel and 1 (smaller) tube of the remineralization gel. I have no idea what’s in there, but I plan to just use some fluoride gel as a replacement.I put the whitening goo in my invisalign and that works great. Since it fits so close to my teeth, I can treat the fronts and backs of my teeth with the same amount that’s supposed to only treat the front. My main issue was coffee stains, which made my teeth fairly yellow. The shade scale that they provide as Goes from brown to white, but there’s really no yellow color in any of the color swatches, so none of them ever matched my teeth and it was pretty hard to judge using the scale they provided, but my teeth are definitely much much whiter after about 4 treatments. It will mess your gums up if you leave it on your gums. You’ll feel it, so if it burns, get that stuff off your gums or you’re going to be in pain for a couple days. It doesn’t seem to do any permanent damage, just a mild chemical burn, but still not fun. I did use the universal tray that comes with the kit once and it was fine. Just make sure you rub it side to side so it gets the gel on the front of all your teeth. The diameter of the tray is larger than the diameter of the line my teeth trace, so while the center was touching my front two teeth, the sides were not touching anything, but as long as you get the gel on your teeth, I don’t think its that important that the tray actually touches your teeth during the entire treatment. I did find myself biting down pretty hard on the tray which was annoying after the first 10 minutes. With the invisalign, I just hold the light with my iips and there’s no pressure on my jaw and it creates an even spread of the whitening goo over the front and back surface of my teeth.

Whiter Teeth ?
I love this product. It’s very easy to use as well. The directions provided are very straightforward. The gel is easy to put on the mouth tray and you can do this while actively doing something else like watching TV or even cooking. They can get you more, COMPLETELY FREE OF CHARGE if you want more white gel. It’s a slip in the box for instructions. You will notice a whiter change in your teeth after a few days of using this product.The only thing I wish was provided was another tube of the blue gel (Remineralizing and Desensitizing gel) because you’re only provided with one. My gums dry out fast from the process for whiter teeth with the provided machine. This part could vary from person to person. Overall, a very great product. I personally recommend it!

Barely noticed a difference
Used about half of the product so far, used them religiously every day, once a day, and barely noticed a difference.Also initially getting the hang of getting the button/light to work for the full time was tricky, but eventually figured it out.Honestly, expected a bit better results from something I have to keep in my mouth for like 30min.