I don't understand the whole birth defects thing. Does this mean if the woman is exposed to finasteride it can cause birth defects? If that's the case he can just use oral finasteride. I don't see how using it orally would cause any birth defects (unless there is something I'm missing?)I'd definitely stay away from topical fin if you're having a kid on the way it can easily get absorbed trough skin contact and its well known to cause birth defects