... effect Home use tooth bleaching pen with brush on Christmas promotion!Ingredients: carbamide peroxide,glycerin,propylene glycol.Application: ... , keeping your lips away from your teeth.3.Whilst looking in a mirror, apply a thin application of the gel ... gel onto your gums wipe it off immediately with a cotton bud.5.Keep your smile wide for ... :86 13849046880Linda $1 teeth whitening pen as a Christmas gift!