The treatment can be carried out with a roller fitted with 192 tiny needles, or with a pen that has a stamp-shaped tip carrying 3-12 needles. It can sometimes also be done with a tattoo gun, in this case without ink.
Scars are treated with medical rollers (with needle lengths between 1.5 and 3 mm). These are not suitable for home use, and the treatment may only be carried out by a trained medical or paramedical professional. The device is rolled back and forth over the skin several times – lengthwise, crosswise and diagonally. The pressure is gradually increased without becoming overly aggressive. Too intense a treatment can lead to worse scarring.
The needles penetrate into the dermis, creating thousands of micro-wounds. This results in evenly spread bleeding with very superficial inflammation. The needles pierce the epidermis without damaging it, so it also heals quickly and completely. The skin bleeds for a short time, but this stops within a few hours. Treating an area of 10 cm² takes about 5 to 10 minutes.
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Peter Moortgat
physiotherapy coordinator – research and training coordinator