This system seems more difficult to use than the older system. I'm finding it a pain to have hooked up to something to work. Thankfully I have a hand held charger.
Pur-White Smart Teeth Whitening System (36 % Carbamide Peroxide)
I AM 75YRS OLD BUT MY WHITE TEETH MAKE ME LOOK MUCH YOUNGER.
ONLY USED IT 2X SO FAR BUT WHAT A DIFFERENCE.
I love this! Very gentle on my teeth. I have VERY sensitive teeth, and this did not bother me at all. No pain or sensitivity. Very quick to see results!
I am so happy with the results its amazing how my teeth is 2 shades lighter in just 14 days .. Highly recommended