I make it in a 50 ml bottle, and keep it in my shower, alongside my face towel.
Half castor oil, half olive oil.
Everyone I shower, I rub a good amount on my face while I let the sizing hit water run against the wall. Go about other shower relayed tasks, then soak the towers in hot water and place it on my face. Let it sit until it cools. You can do this again, it you want.
It's like my own little spa treatment. I love it.
I've noticed that not only is my face more balanced, but the pores have reduced dramatically, and blackheads are practically gone!