Needed way more than one treatment
Decided to try these, was hoping would be more concentrated and get the job done in fewer days (I normally do the daily 2x a day for 2-4 weeks).  They did not.  I used them three times, every other day and did not notice much whitening.  I only do this like once every 2-3 years, so next time I'll go back to the slower treatment.  As my mama always said, patience is a virtue...
Rating: 3 stars