I love the case this comes in. Everything feels sterile, medical grade like - and the included needles are in individual sterile packages. Some notes: -The needle cartridges are one-time use. The box includes (2) cartridges in 3 sizes (for a total of 6). - I did not find any included directions on exactly *how* one should go about micro needling their skin (desired motion, how often between sessions, etc). I would recommend looking up a video to answer those questions. - I’ve completed 1 session on my skin. I have Keratosis Polaris, rosacea, and a decently prominent scar under my bottom lip from a childhood accident. My skin is definitely smoother, and I can see how this would reduce the appearance of scaring over time. I did experience some breaking out after the fact, but I feel that’s to be expected considering the nature of micro needling (you’re creating a lot of micro-wounds that could gather bacteria from the briefest of touches).