I have used other teeth whitening systems and they have all harmed me including the dentist system which cost $350. LUELLI Gel does not bother my teeth. When I finish the session, I don't feel any pain. I would love to take photos to share but I didn't. I have used the product 4 times and I can see my teeth are whiter. If you buy this system, be sure to take photos in good light beforehand. If your teeth are whiter, take pictures from the same angle and in the same light to make the comparison as objective as possible. I bet you will be satisfied. I also use a cotton swab to apply to dry teeth which saves gel. I don't know if I'm getting the same results, so it's up to you. Maybe more gel would have worked even faster.
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