** Expiry Date: 1/8/2026 ** Office bleaching is used to lighten both vital and non-vital teeth, with application taking place at the dental office by a professional dentist. This product contains a high concentration of hydrogen peroxide (35%). The product is presented in two separate liquid phases. One syringe contains the hydrogen peroxide phase, while the other phase contains the thickener. Once mixed, the thickener begins to act, transforming into a gel. Pack contains: - 1 x 0.4 Gr syringe thickening. - 1 x Hydrogen peroxide 35%.