These White Royale Premium Perfection Whitening Pens contain 9% Hydrogen Peroxide Superior whitening gel to create an ideal on-the-go whitening solution. Using the pen is simple, just twist the bottom of the pen until a small drop of HPS whitening gel appears on the bristles and apply the gel directly onto the teeth. The brush tip is ideal for those hard-toreach areas. Due to the revolutionary HPS gel in the pens, the kit does not need to be stored refrigerated.
