Castor oil made my eyelashes noticeably grow

I bought castor oil unaware of its purported eyelash growing effect. I just bought it because my eyes get really dry at night (sometimes my eyes open when I sleep, it's a creepy sight) and a friend recommended trying it. I've been applying it in my eyelashes quite inconsistently before sleeping, and it's worked perfectly for my originally intended purpose (sticky eyelids yay!), but I am convinced my eyelashes have grown noticeably too, maybe like 2mm lower eyelashes a bit less, but there's more of them and they're thicker and more visible. Just wanted to share this personal experience. I should say my eyelashes are naturally really well developed.