Used this on numerous occasions. Just make sure you have latex gloves because it doesn't come with plastic/latex gloves. It feeds my hair and adds extra shine. It lasts for quite some time before you have to re-do or touch-up. Very effective.
Leave it on for more than 30mins. Let the product get dry on your hair.
Rinse, rinse, rinse...until the water runs clear. It can be a messy, so make sure you wearing an old t-shirt.