Laser epilation technology follows the principle of "thermo-kinetic selectivity" similar to solar light which is easier absorbed by dark materials than be light ones – laser light exclusively heats dark pigments - in this case hair roots, which are also known as hair follicles - to more than 65°C. As a consequence, they forfeit their ability of producing new hair. The surrounding area of lighter color
The first IPL device (intense pulsed light device) ever deployed for this treatment called "photo epilation" in 1994. Shortly after, it was followed by the first ruby lasers, then – undergoing a rapid development – by alexandrite lasers, diode lasers and long-pulsed NdYag lasers. The IPL devices, initially partly fraught with severe adverse effects, were significantly advanced by deploying improved filters and other technological advancements.
What must be considered before the laser treatment ?
It is advisable only to shave the areas to be treated at least six weeks before the treatment and not to have removed the hair by waxing or plucking. Also the skin must not be pre-tanned, i.e. one must refrain from sunbathing or visiting solariums at least 6 to 8 weeks prior to treatment. Three days before the treatment, the corresponding part of the body should be shaved again.
What happens in laser treatment ?
After application of an anaesthetic cream which needs 1-1 ½ hours to take effect, the laser device sends out an energy rich ray of light through a laser hand piece, which is passed over the body at a fixed distance. In this way, the productive hair follicles are heated to a temperature above 65°C and lose the ability to produce a new hair. Two impulses per second are triggered and per impulse an area of just over 1 cm2 is covered. Thus the treatment of both lower legs lasts only approx. 40 minutes. After the treatment, special skin cream is applied and the skin areas which have now reddened a bit are cooled with cold gel compresses for ten minutes.
Is laser treatment pain-free ?
The feeling of pain is greatly alleviated by applying an anaesthetic cream 1-1½ hours before the treatment.
How frequently must one have a laser treatment ?
The hair follicles in the treatment area which are producing hair are damaged selectively by the laser energy. In order to be able to treat the inactive hair follicles at the point in time of the laser epilation, three to five treatments are necessary at intervals of one to three months.
How long-lasting is the treatment ?
Since this is a new process of hair removal, there is no certainty whether the success will last a lifetime.