The basic function of the tonic is to slow bleeding and thus prevent large crusts from forming - even if the client does not properly care for the eyebrows after the treatment. The less bleeding, the better cured results. The formulation is packaged in a mild tonic containing 10% neutral shampoo (green soap) (used to easily remove the pigment from the skin during treatment). A protective layer is formed on the skin surface 10 minutes after the treatment, after the tonic has completely dried out. Its function is to protect the wound from the dust and sweat for the first 30 minutes until the client starts aftercare. Block Tonic is packaged in 5ml monodoses for single use, ideal for one treatment (10 cotton pads).