Fraxel re: pair® uses a fractional CO2 technology as skinresurfacing, with thousands of microscopic laser columns penetrating deep into the skin and removing old damaged skin cells. These laser columns are each directed only to small fragments of the skin so that the adjacent tissue remains undamaged. This "fractional" treatment allows a faster natural healing of the skin than with a 100% removal of the uppermost skin layer at once.
The original Fraxel laser is a patented robot scan handpiece, which rolls over the skin without settling and guarantees a homogeneous energy output computer-controlled. This means highest precision, no over- or under-treatment. Subsequent models have a hand attachment, which travels over the skin in a punch-like manner.