It really does the job! I am a woman with thinning hair.  I use the medium brown and it stays in until I shampoo my hair.  It doesn't rub off on my pillows and the .87 oz can last a surprisingly long time.  I highly recommend this product, it's so much better than the other things that I tried.  The Joan Rivers product was the worst.  It rubbed off on my pillows and the headrest in my car.