My hair has been thinning for the last 15+ years and I have done everything to make up for it short of a transplant - wigs, weaves, etc. even though my own hair is quite long. I heard about Toppik and got this small travel size because I just had a hard time believing it would actually work, and I didn't want to risk too much money on it. Well, I absolutely LOVE Toppik! I'm a cook and an artist so I have a good hand, which meant I was successful in my first attempt at applying it and it only took a few minutes. just aim over the area, and tap the fibers on. The hair on the top of my head is quite thin, so I did have to apply more than some others might have to, but it does what it says, and I was so thrilled it brought tears to my eyes and I am buying a larger size. Yes, you can run your hands through it, and yes, you can style it. If you have thinning hair, I cannot recommend this product enough. TIPS: I read it before in the reviews and now I know it myself - get a shade lighter than your hair. I got the Dark Brown, and it looks almost Black upon application. I am able to get away with it, but my next order with be the medium brown and I will mix them. Also, if you need to apply a lot of it, which I did, it will result in the Toppik-treated area looking duller than the rest of your hair. I tried a little shine spray with my hair out and some holding gel with my hair up, and both seemed to work in getting the shine back. Some folks have complained of itching, but I haven't had that issue. I tried sleeping with it in just for giggles, and some came out, but not that much. I have not yet gotten it wet, so I cannot comment on that. If you're still skeptical, do what I did and at least try the travel size so your risk is minimal. But I am a happy customer - no more wigs and weaves and I can finally have my own hair out without being self-concious. Thank you, Toppik!!