I’ve used several brands of whiteners over the years. This one worked nicely. I’m not use to using whiteners that take an hour for each session, but I pulled/swished with coconut oil ahead of time to protect my gums. I have tooth sensitivity and I worry about anything that may exacerbate that. I did notice whitening.
https://www.amazon.com/Grinigh-Whitestrips-Professional-Whitening-Treatments/dp/B07B1V2K3X
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