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The light unit switches off at different times, the instructions say the unit will stay on for a few minutes but it switches off after only 30 seconds which I suspect is because the package expired last November and the battery is failing. Go to a retail store and pay the full price!
Verified purchase: Yes | Condition: New
My wife used it and found the instructions were different from those given on the crest site for the product time that the strips were kept on.
Verified purchase: Yes | Condition: New
I am 68 yr old male who was embarrassed for years with terribly stained teeth. Asked my dental assistant ref dental whitening and said dentist charge was to expensive and try Crest dental strips. Original strips alone a disaster. These with light awesome. Very excited with end result. Never expected this to work but it does.
Verified purchase: Yes | Condition: New
The light did not stay on for the appropriate amount of time after the 4 treatment.
Verified purchase: Yes | Condition: New
For the expensive price of the kit you can do just as well with plain Crest White Strips.
Verified purchase: Yes | Condition: New
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