There is nothing -- and I mean nothing -- worse than making a dress shirt only to discover that the buttonholes start to unravel after the first couple of washings. Well, okay, maybe there are lots of things worse than that, but you all know what I mean.
They wrinkle, too. Horribly. But I digress.
I can fix the buttonholes. It's not a fun task, at least not to me, but I can do it. I'd much rather do the buttonholes right the first time.
I know lots of people use fray check, but I've never liked using fray check in buttonholes -- I just don't like fray check, I guess. It's scratchy. I don't like scratchy things. So I thought I'd shoot for another solution.
On the next shirt, I took those thread tails, threaded them onto a needle, and ran them under the stitches of the buttonhole on the underside for a quarter inch or so, and then clipped them.
Now the threads are secure and it looks good on the inside, too.