Gentle 35% carbamide peroxide formula is easy on teeth and gums. Thicker 35% whitening gel sticks to teeth for fast, bright results Simply wear whitening gel for 15 - 30 minutes, trays are not included Or apply a thin line on your toothbrush for a quick two-minute touch up 4 Huge 10ml Teeth Whitening Gels Plus 1 Aftercare Gel Watts Power whitening gels have provided dazzling white smiles since 2005. Our quick and easy, over the counter 35% carbamide peroxide teeth whitening gels are strong yet gentle enough for all teeth. Universal teeth whitening gels work well with any tray or toothbrush. Tray or toothbrush are not included. Watts Power gels are larger 10ml providing many uses and can store in fridge to keep fresh between long periods of non-use. Includes four, 10ml teeth whitening gels, one aftercare gel and instructions. Caps or tops on gels can vary based on availability in the supply chain.