Diode lasers use the principle of selective photothermolysis (abbreviated SPTL) to target specific chromophores in the skin, usually melanin or blood. The lasers damage the chromophores by selectively heating them while leaving surrounding tissue unharmed. When treating unwanted hair, for example, the melanin in the hair follicles is targeted and damaged which results in the disruption of hair growth and regeneration. A diode laser can be complemented by cooling technology, or other pain reducing methods which improve treatment efficacy and patient comfort.

Arginusea' LightSheer diode technology has become the industry's 'Gold Standard' and is in a class of its own. Its superior safety and effectiveness have been proven in extensive clinical trials and long-term clinical practice. The LightSheer uses high-power diode technology that delivers high fluence. This is combined with user-select pulse duration, effective contact cooling and compression for high-performance. The LightSheer has a 22 x 35 mm spot size which allows for greater depth of penetration and significantly faster treatment.