Blanx White Shock Pen Tooth Kit 12 MLBlanX Pen is the whitening treatment with soft touch applicator that you can take everywhere with you to add a touch of glamour to your smile at all times. Thanks to the exclusive BlanX White Shock formula with the patented active ingredient ActiluX, the BlanX Pen activates with light and whitens teeth every time you smile, all day long. The BlanX Pen is practical and safe for tooth enamel and gums. Additionally, the Blue Formula acts immediately with