4. Paint the whitening gel on your teeth back and forth. Avoid direct contact with gums.
You can paint more gel on ugly teeth.
5. The instructions of the cold-light controller
a. Press and hold the multifunction button (MFB) for 2 seconds to turn it on. (Turn it off
by the same way.)
b. The default mode is the 30-minute mode. And the mode will be shown on the LCD
screen. Short press the mode button to select certian mode.
Note -- There 4 modes: 5 minutes, 10 minutes, 15 minutes and 30 minutes.
c. Press the MFB to begin your teeth whitening process.
Note -- During the process, you can press the MFB to pause at any time and press it
again to continue.
6. Place the teeth tray in your mouth and bite down gently. Then turn on the controller
and choose desired mode. And the teeth whitening process begins.
Note -- It's recommended to put the teeth tray in your mouth before turning on the
controller in order to avoid discomfort to eyes caused by sudden light.
Note -- It's recommended to lie on the side or lie down to prevent saliva from
overflowing during the whitening process. It's safe to swallow saliva during the
whitening process, and by doing this, the whitening gel won't be diluted so the whitening
result won't be affected. It's recommended to watch videos or TV programs to distract
your attention. Thus, you will find the whitening process more pleasant and faster.
7. There is a built-in memory chip in the cold-light controller, and it memorizes you last
choice each time use, so you don't have to choose modes again if there is no need. To
save energy, the controller will turn off automatically while there's no operation more
8. The cold-light controller is equipped with a 2000mAh battery to support long runtime.
The battery symbol on the LCD screen will flash when the battery is low. Please charge
in time. The battery symbol will scroll during charging.
Note -- It's recommended to protect the battery by charging the device every other month
if it is not in use for a long time.
9. When time's up, the controller will stop work automatically and the cold-light beads
will go out automatically. Then take the teeth tray out of your mouth and clean your
teeth by brushing or gargling. Remember to clean the teeth tray and put it back to its
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