Okay I wasn't exactly sure what this was and with the scarce instructions, I'm still not sure. I had to watch some youtube videos to figure it out and that's not good. I could figure out how to insert the needles etc. I just wasn't sure what I was doing with the pen. Then, I read that maybe I'm microneedling so that moisturizer will have more of an effect. For that, it definitely works well. I've been using my high end moisturizer with this microneedling for a couple weeks and I definitely see results after microneedling. I don't know for sure which product is working but I definitely see a reduction in fine lines on my face. I have lines around my eyes and my mouth - smile lines and after microneedling with this product and applying moisturizer, I see a noticeable change. It's easy to assemble and use but it definitely needs more directions because this is a medical device and I need to feel confident using it and more directions would help.