My wife and I meet all the criteria - Central European fair skin, dark / very dark hair. Despite its intended application shows with us no significant effect. Even at the highest level is the "fail" the hair after a few days, as described, can not be determined with us. What most annoys me personally, is the planned obsolescence, so the built-in life of the flash operations. 1000 Flash applications per light use are far too few, since each flash only an area of 3.9 cm2 is treated. In lamp head is a small memory chip, are counted on the "spent" lightning impulses. The manufacturer will explain the life of the flash tube. Unfortunately, the type of flash lamp used can not be determined. SIMILAR Xenon tubes often hold more than 10x as much. The life of a simple (NoName) 21Ws xenon flash lamp is given in the data sheet with 3x10hoch6 Blitzen! Also definitely no distinction is made as to whether the lamp is ignited with lower energy level or full power. A flash = counted down once. Thus, sales of expensive missions is cranked. For us, the advertising promises therefore no recommendation to buy, pity were not kept!