Germany became a modern, unified nation under the leadership of the âIron Chancellorâ Otto von Bismarck (1815-1898), who between 1862 and 1890 effectively ruled first Prussia and then all of Germany.
Laser effects on the skin. Thermal (burn) injury is the most common cause of laser induced skin damage. Thermal damage is generally associated with lasers operating at exposure times greater than 10 microseconds and in the wavelength region from the near ultraviolet to the far infrared.
Laser and intense pulsed light therapy. Laser and intense pulsed light therapies destroy melanin-producing cells (melanocytes) without damaging the skin's surface. Treatments with a laser or intense pulsed light typically require two to three sessions. After treatment, age spots fade gradually over several weeks or months. Laser therapy has few side effects, but it may result in slight discoloration of the skin. Sun protection is necessary after laser or intense pulsed light therapy. Freezing (cryotherapy).