Yup this is my video! No one really has a good explaination of it so I tried my hardest! Here are the steps:
1) Add water (average amount is 8 cups but use as much as you need)
2) Add coffee (8 cups= 8 tablespoons and so on. More tablespoons means more concentration which means longer and stronger hair color)
3) Let it cool for 35 mins
4) Get a hair wrap (or 3 plastic bags), towel, plastic cup, and rubber band.
5) Leave in for an hour and 30 mins, or however long you'd like. The longer the better.
6) Rinse and shine :)