Fast, Safe & Effective. White Glo Express Whitening System lifts satins and yellowing on the surface of teeth enamel safely - whiteout abrasion! This new formula is double the strength of White Glo's famous original whitening gel, providing results in reduced application time of 5 minutes! This tooth enamel bleaching method is a recognised dental technique which has been proven safe and effective, used by thousands of people every day. Lift stains and yellowing caused by consumption of tea, coffee, red wine, food colouring and natural aging of tooth enamel.