Should I use Crest White Strips Classic twice in a row?

Question

I am wondering if it would be more effective to use the strips twice in a row (as the box says you can) or if I should do it two different times during the day.

If I should do it at different times, when would you recommend?

Also, I'm not concerned about sensitivity but effectiveness.. (immediate and long term)

THANKS!!

Answer 1

Don't do it. Whiteners remove the top layer of enamel, and enamel is what protects the tooth.

Answer 2

The sensitivity only lasts for a little while but if it says you can do it twice in a row then I would say go for it.. As for effectiveness it worked great for me