I would like to try the recipe listed but I'm not sure if I strain the mixture first or glob it on my hair?

I read the thread on coffee to color hair.  Does coffee dye the gray?

Thanks in advance!

Thank you, Sakina!  Could this be my first big, "DUH!"? (Well, on this site anyway!)  Now that you have answered, I can see it so clearly!

I only used a coffee rinse once because it made my hair stink for a week  , but yes, you should strain it.  Herbal rinses will cover grey but it takes a while.  I've used a rinse 3x/week for the past 5 months or so and it has taken this long for it to cover around 80% of my greys.  Though it's slow, the process is so gradual that no-one will realize what's happening--not even you.   

I use rosemary, sage, catnip, black tea, and hibiscus or honeybush depending on which teabag comes to hand on hairwash night.  I wash my hair, squeeze out the excess water, dip my length in the rinse and pour the rest over my hair.  I don't rinse it out.