Colgate recently launched a brand new kind of toothbrush that contains a built-in whitening pen. Dubbed the Colgate Optic White Toothbrush + Whitening Pen, it claims the following: Whiter Teeth in 2 Days First toothbrush with a built-in whitening pen As Easy to Use as Brush. Whiten. Go.TM I recently had the opportunity to give [...]