Can I use coffee?
Dread Products
This is an interesting question, I love the smell of coffee! :D
I did some online research and it says that coffee can, along with dying, promote faster hair growth. I read that you can brew coffee and let it chill, and then use it as a spray into your hair and let it sit as long as possible. Rinsing is called for, but I'm willing to bet the smell will linger.
Another thing, If you decide to try this then keep in mind that coffee has the tendency to stain things! So be careful not to get any on your clothes or furniture. It can stain your skin too, so try not to let it drip down your face and neck too much unless you want to look like a zebra. :P