Pola Teeth Whitening Gel, 4 Syringe Pak, PolaDay 7.5% Hydrogen Peroxide

I bought this along with a generic tray. I used for 30 minutes and my teeth were at least 3 shades lighter!. My teeth did not experience any sensitivity. very happy with this product.

I got a 10 vial set of bleach with fitted tray from my orthodontist and then purchased the 4 vial set from Amazon. Iused it faithfully daily for 3 weeks and only changed my shade from 4 to 3. I am 60 but if it's not going to work on old teeth they should let us know

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