Thanks banjos for your reply. My only question is can castor oil help to grow eyebrows back even if underlying cause is not found of treated? I still don't know the cause of my eyebrow loss-I was told fungal infection-but I'm not sure that's the cause. Will using castor oil be 100% effective when i have not treated the underlying cause? It's great to hear your eyebrow filled in - well done! I will try it anyway as very desparate at this point for anything. Thanks.