#home-made #eyeliner Mix: Activated charcoal, Cocoa Powder, Coconut Oil For a black eyeliner, add a pinch of activated charcoal in with coconut oil. For a brown eyeliner, add cocoa powder to coconut oil. Apply with an eyeliner brush. *Be sure to be extra careful when applying products around your eyes. Make sure you don’t get any products into your eyes, or you may cause damage.