I bought it because initially it was a very economical solution and I also saw positive comments.
- I used mouth trays that I had made from a previous whitening at the dentist.
- Two ten-minute sessions as I saw in the comments and instructions.
- I left it on for an extra half hour without the blue light.
- I started from level 6-7 on the whitening scale.
- Used the entire product (about 12 uses)

Result:
No change in color. I do not know how it is and if it affects if someone starts from level 13-14. Some extremely positive comments also seem strange to me. One user reported good results after just 3 hours of use.
Also, the mouth trays it contains are not convenient at all if you do not already have them made.

The main difference that the Xpress Smile Kit has with the Elite Home is that with the Elite Home, you make custom trays for the teeth that are super comfortable and allow for better placement of the gel. I would only recommend the Xpress to someone who doesn't have time to make the trays (10 minutes tops). Other than that, the Xpress has a stronger lamp, which is why it only requires 10 minutes instead of 20 minutes.

Very good, I really didn't believe it from the first application. It has various tones of smile!! I'm on the third day of application, flawless. I would definitely buy it again

I did 3 sessions and saw a noticeable difference on the first day. I will try to reduce coffee as my dentist had suggested earlier because it greatly affects whitening

First of all, the kit and its materials are of good quality. The mouthpiece is ready and comfortable.
You apply a satisfactory amount of gel on the top and bottom and leave the LED on for 2 minutes (it automatically turns off after ten minutes and you turn it on again).
In 8 days, my teeth became 4 shades whiter!
There are also replacement gels available to reuse it or to continue the treatment for more days for even better results... Very good value for money!

Just finished the treatment and my teeth became 4 shades whiter. The LED turns off after ten minutes, but it recommends doing another ten for better results. During the treatment days, I avoided coffee and soft drinks.