Whitening System uses a mouth tray and gel is a form of bleaching known as the oxidation method. The oxidizing agent in the gel releases solitary oxygen atoms, free radicals, which then break down the organic molecules (discolouration).
It usually takes 2-3 days to see the first results, but we recommend you use it for 3-7 consecutive days. The usage depends on the amount of discoloration you wish to remove.
Use ¼ ml to ½ ml of gel on each mould. Place a thin layer of gel in the front portion of the mould, so that the gel covers the outside of your teeth. If you add too much gel into the mould, it might get squeezed out by your teeth and end up on your gums.
Detailed instructions with pictures are available in the packaging, as well as on the product page.