A treatment method for non-ablative tissue regeneration includes directing at least one laser pulse having a wavelength onto a tissue surface of a human or animal body, and controlling an energy delivery time ted of the at least one laser pulse, during which the second half of the pulse energy is delivered, to be sufficiently short, so that, given the wavelength and thus a corresponding penetration depth δ of the at least one laser pulse, a thermal exposure time texp of the tissue surface is smaller than 900 microseconds. The thermal exposure time texp of the tissue surface is defined as a time interval in which the temperature of the tissue surface is above To+(Tmax−；To)/2, wherein To defines the initial temperature of the tissue surface, before the laser pulse arrives, and Tmax is a maximal temperature of the tissue surface.
