Make your teeth whiter with our excel teeth whitening kit, the 20 ml gel can be used to top up on any previous teeth whitening treatment or as a first time treatment. This excel kit includes 2 x 10ml syringes, a set of thermoforming trays, with full instructions and a shade card. Get white teeth fast. You can now get even faster results, why not try our extreme whitening with our 36% teeth whitening gel, with gum barrier included. Get white teeth fast.