Whitening systems make use of carbamide peroxide to achieve their whitening results. Kit contains: - 1 x 3 ml syringe sodium carbamide peroxide gel 44%. - 2 x 3 ml syringes office 2 sodium carbamide peroxide gel. - 1 x 22% home syringe of desensitizing agent (Potassium gel). - User manual shade guide. **For further product information, please contact Chat Support**