Дерма ролер за микроиглена мезотерапия?

снимката е моя:

Skin is very tough because it is our protective layer. It is not easy to penetrate the skin, especially not with many needles in one go. You can make penetration easier if you soften the skin by taking a hot (steam-) bath prior to rolling. You should put moderate pressure on a dermaroller. Not too much and not too little. If you do not put any pressure on the roller then the needles only go superficially and you can roll more frequently. I would compare it to tooth brushing – too much pressure is not good and too little is not efficient..
The thickness of the skin (epidermis + dermis) is about 0.3 mm on the eyelids, 1.5 mm on the thigh, 1.8 mm on the back and over 2 mm at the soles of the feet.  It varies depending where on the body it is and it varies between individuals as well.  Furthermore, men usually have thicker skin than women. A 1.5 mm roller penetrates about 1.3 mm into the skin, when applied with sufficient pressure.
Studies showed that the collagen induced by rolling was not deposited deeper than 0.5 mm.
Some surgeons use dermarollers with 3 mm long needles (those "bloody" YouTube videos are from rolling with needles longer than 1.5 mm and they cause a bloodbath) but there is no evidence that those work better than 1.5 mm rollers. This is not our theory - this is what the Swiss dermatologists who patented the Original Dermaroller say on their own website. And they sell exclusively to clinics and other professionals. 3 mm rollers are unsuitable for home use since they carry the risk of infection and nerve damage. We think that those rollers are a marketing gimmick, intended to persuade people not to home-roll but to pay through the nose for a "bloody treatment" instead, because that would be somehow be "better".
Your goal is to produce collagen in the dermis. A 1.5 mm roller will reach the dermis. That is all you need. The epidermis has no blood supply. The dermis has irregular, small and relatively sparsely distributed capillaries in its upper part and a denser network of larger capillaries in its deeper part.