This is what happens when you don’t. This ain’t my first rodeo, I’ve got more stitches than a baseball on my face and arms. Most of it was done years ago when heavy equipment had no cabs and I had no sense. In the outdoors 12/14 hours a day, short sleeve shirts 10 months of the year. You get the picture. For the last twenty years I’ve worn it pretty much every day but most of my damage has already been done. I’m reaping the “benefits” of it now !