Have thin eyebrows or wish they would grow fuller?

Thicker Eyebrows

I am not a fan of Vaseline or petrolium jelly at all because of health concerns, but the idea of Castor oil and Olive oil makes since as a natural means to grow your eyebrows fuller and faster. Try it for a month and let me know your thoughts.  I am def going to try this out and let you know how it grows... Oops, I mean goes.  lol.