I've tried it on the legs (stretch marks) and it's really an ordeal, I have forever and a day "rolled" with light pressure with firm pressure, umpteen times back and forth and always nice weggeatmet the pain, a few "little hole "are then also emerged from which flowed blood and - that was OK that I wanted to achieve. However, many small scratches caused what caused when the needle goes in and just be pulled through the roll crosswise and thus the "hole" is frayed. This is no improvement but max. deterioration of the desired effect.
In addition, I feel that the needles are not "sharp", I tried it with Emla ointment, so I thought okay VLT subconsciously through the pain I turn it does not feel right. After that I had no desire, so I had to push real and often roll and nothing happened except a small hole.
If you look at it observed very carefully and look closely, you can see that through the narrow needle gauge a "fakir effect" the needles may arises not really penetrate the original needle distances are significantly larger, so that the skin "gives" and the needles clean, one and again ausdringen.
The original me but is too expensive, so I just let it as it is.
I think that the positive effects on the face, rather by stimulating the blood circulation can be found in the same order a massage. Because if you use the application properly and the order of 1.5mm (where this Eigent only a doctor should apply / household there is max. 0.5mm of rest is for beauticians and from the length intended for a dermatologist) it does nciht possible the scooter would be to use every 2-3 days as some write here. One would have to wait a few weeks until the skin has healed properly and actually you would look first few days as a "holocaust" as someone here wrote.
I think it's the placebo effect, and the conscience is calm. For proper results absolutely not recommended - unfortunately.