The principle is great, but ...

I am using the Derma Roller is now every two to three days and can detect very clear differences of my skin, as compared to before using the scooter. The pores close continuously and my skin is less prone to blemishes. Through the small needles and the pressure applied, the skin is very well supplied with blood and acts plumper. This circumstance can also disappear very fine lines.
The problem is that the quality of the scooter to be desired. Already after the 5th application he began to ugly to squeak, which is of course very annoying when using. Overall, the scooter makes, in terms of materials and processing, not very robust. This is of course due to the low price.
Conclusion: if you want the principle of Derma-Rollers try it, is well served with this copy. However, if you want to use in the long term as a beauty product, should buy a little more high-quality equipment prefer.