I’m often asked about products that help the brows grow back in and I say the same thing every time: castor oil. Not only is it cost effective, but it really works too! Amongst all of its amazing benefits, castor oil is a stimulant to the hair follicle. No, it won’t grow in brows that were never there, but if you are a victim of over tweezed brows then grab yourself some pure castor oil (any brand) and apply nightly. If you have acne prone skin and worried about applying oil on your face, test a small amount by your jaw line to see how your skin receives it.