Who doesn’t dream of having long, thick and dark eyelashes and eyebrows? Castor oil is known to be effective in growing and thickening eyelashes/eyebrows. It is also capable of preventing them from breaking. How to apply: -Take an eyeliner brush and slowly dip it into the castor oil then apply carefully on your lashes line/eyebrows (don't let it get into your eyes). -It is better to apply it at night before you sleep. Leave it on for the entire night for best results then wash it off in the morning.