Features: - Hydrogen peroxide whitening gel at 35% with calcium for in-office use. - Syringe coupling system A single application per session: - The product can remain in contact with the teeth for up to 40 minutes without having to be replaced as the PH remains stable throughout the session. - Besides, it causes less sensitivity. Contains: - 1 set of 2 syringes :1 bleaching syringe and 1 activator syringe. **For further product information, please contact Chat Support**