Paypal me five bucks and the info is yours 
Every time I shower I mix two teaspoons of espresso coffee with my shampoo. I leave it on for like 15-20 seconds extra. Not sure if all other coffee work, mine says on it stuff like gourmet and premium but I don’t believe it needs to be a special pricey coffee. Just not to be rubbish or instant coffee.
At first I was doing it every day and now I do it 2-3 times a week. It was supposed to strengthen, condition and make hair shiny but it also darkens my hair since day one. And by darken I mean many white ones are now black somehow.
This is what I sent to others asking me via DM. But here is something extra just for you 
I shared it with other people and somebody told me knew about it and that he started like me but later started doing coffee based hair masks with other stuff like rosemary. And leaves it on for 20-30 minutes once a week. He told me the results are even better. Haven’t tried that though as I don’t know how to make hair masks.
