In case you want an impeccable, white and beautiful smile, at home, we can help you. Instructions: Clean and dry your teeth; Apply a thin layer of gel on the teeth; Smile for 60 seconds to let the gel dry; Brush your teeth after a few hours The main objective of these gel pens is to be used in combination with the Whitening KIT from the SHINE range, but even without this device, the gel will do its job like a book by applying it directly on the teeth and letting it dry. by simply holding the smile for 60 seconds, after which the teeth should be brushed well after a few hours, preferably at the end of the day.