Think about cost-benefit: in-office treatments are much faster however more expensive; take-home trays are affordable with gradual
https://telegra.ph/The-Length-Of-Time-Does-Teeth-Whitening-Last-A-Reasonable-Timeline-04-15
Consider cost-benefit: in-office treatments are much faster however more expensive; take-home trays are economical with gradual results-- pick based upon timeline and spending plan.