I rely so much on this tool. It's good for whiteheads, and if turned a certain way, can even get out my blackheads without too much pain or irritation to my skin. I, sadly, get cystic acne, and this tool doesn't help only because nothing helps cystic acne but time. But I have found that it can help large acne on my shoulders and back. I use this tool almost daily!
Sadly, after 4 years, my skin care tool broke. I think that is a pretty good shelf life. I do plan on buying a new one ASAP because of how much I use it.