Attack depigmenting serum for all types of hyperpigmentation especially rebellious hyperpigmentations, post-inflammatory hyperpigmentations and melasma. Unique combination of 4 active ingredients: hydroquinone 4% (depigmenting agent), kojic acid 1%, glycolic acid 6% and vitamin C 2% (synergistic active ingredients). Properties of Unitone 4 white adavanced: Inhibitor of melanogonese by inhibition of tyrosinase. Exfoliating thanks to the reduction of the cohesion of corneocytes. Reduction of preformed melanin. It must be applied in the evening on the area to be treated. Airless packaging to preserve the efficiency and stability of the formula. The high concentration of HQ will grant a fast and long lasting effect.