Rad or Bad: Would You DIY Your Own Eyelash Serum?

If you do any hanging out around these parts, you know that we love ourselves a good DIY project -- especially when it comes to a homegrown beauty treatment (cheaper and all-natural? Count us in). That is, until we came across this post on hair and makeup artist Sunnie Brook's awesome blog. A DIY eyelash growth serum? With castor oil? Don't get us wrong, we're all for an alternative to Latisse and its strange side effects, and as a total beauty pro, we tend to trust whatever Sunnie sends our way...