BECONFIDENT® X4 Kit: with Triple Boost Max Teeth whitening Gel / X4 uses 3 technologies to whiten teeth up to 7 shades whiter. The gel contains PAP (ε-phthalimido peroxy hexanoic acid) + sodium bicarbonate + coco sulphate which works together for the most effective peroxide free whitening treatment available. The kit contains of 2 pcs Beconfident® NEW Pro mouldable "No Flow" mouth trays and gel applicator. Manual included.