I find Head socks a must when fishing fresh or saltwater. I'm in my sixties now and every year I am having sun cancers removed, this skin damage was probably done in my 20s, 30s and 40s. So protect your skin when fishing. You might look a bit like the invisable man but at least you don't get sunburnt.
Sun Gloves are an other important bit of kit to protect the back of your hands from the sun they also help when handling fish. I prefer the silicon palm for grip on the fly rod and fingerless for ease of knot tying.