How long do you leave trays on for home use? How often?

The wear time can range from as little as 15 min twice a day to 8 hours over night.  It depends on what system and what percentage of whitening gel your dentist felt would work best for you.  Give your dentist a call to find out about the proper time recommended for the gel he or she gave you.

The length of time to leave the bleach on the teeth depends upon the the concentration of bleach given by your dentist.  Typically,  after a couple of hours the the bleaching has lost its effect. We use a 20% carbamide peroxide and have the patient whiten for 1-2 hours for about a week.  Good luck. 

Thank you for your question. The answer is it depends the concentration of active ingredient in the whitening solution you use. If there are no directions on the package, you should ask for directions a doctor, who dispenced the product as he/she is familiar with it.I recommend my patients using teeth whitening every day/night discepencing a small amount into the tray for seven to ten days till product is gone or until they are happy with results.