It is a 10 day teeth whitening set. With this set you can get clean and white teeth. Dual Boost X2 consists of 2 phases: Phase 1: It is responsible for gently removing surface discoloration thanks to natural ingredients such as coconut derivatives and negatively charged ionic foam bubbles. Phase 2: its whitening active ingredients will eliminate discoloration in depth without damaging the enamel. After 10 days, the teeth are up to 5 times whiter. Its formula removes stains from wine, tobacco, coffee, etc. and provides a natural white tone. 100% sure. It does not cause sensitivity or other side effects. Free of peroxides.