Dermo-aesthetic technique – laser / led’s. Lasers in dermo-aesthetics, these light bundles create heat that modifies the structure of their target: collagen, fibroblasts, melanin, or haemoglobin. Expected clinical effects: the use of non-ablative lasers means that brown spots and other colour imperfections can be erased, and the skin is left smoother. Leds in contrast to lasers, led bundles do not produce heat. Their rays trigger specific chemical and cellular reactions, and particularly target impurities, pores and microcirculation. Expected clinical effects: leds aim to tighten pores and restore radiance.