One important thing to remember when applying the bleaching solution or gel is to make sure that you do not fill the trays. At most, place only a drop or two of teething whitening solution. The recommended amount per arch is approximately 0.5ml of whitening solution.

The solution must not reach beyond half way up on the inner front surface of the tray – i.e., in the front of each tooth in the tray. Also, do not spread the bleach around. Make sure the solution stays put.

After placing the solution onto the tray, recap the syringe and place it back in your medicine cabinet or other safe place to be ready for next time you apply treatment.

Now, to insert the mouthguard-like tray in the mouth over the teeth, seat the tray firmly against the teeth.

Some excess whitening or bleaching solution may seep over the brim of the tray onto your gums as you fit it in. Just wipe that with a piece of cloth while holding the tray up with one hand. If any of the excess solution gets to your gums, you may use your fingers or soft tissue to wipe it away.