Some people may get clogged pores from castor oil though. It is only jojoba and emu which won't clog pores.
One thing I use castor oil for is the thickening of eyelashes, and if needed eyebrows. I use the oil 3-4 times a week, at night. If oil accidently seeps into eyes, or very close, you'll have double vision, this is the only side effect. I am amazed, friends are amazed how my eyelashes have grown longer than before, how they thickened. Visible results in 2 short weeks. You actually put the oil on a Q tip, and apply on the roots of lashes, not straight on lashes. Much much cheaper than those overpriced, so-called eyelash growers, like Jan Marini for e.g.