"...Is this a double standard?..."

Good question. I think that some men want their women to always look young (maybe it makes them feel younger or something), while many women want their men to look "natural." Case in point, while I have never been one to cheat on my wife, either of them (altho the first sure deserved to be cheated on), as my hairline receded, and my hair went from dark to grey, I got more and more offers from younger and younger women. Go figure. All of which proves nothing more than life is not fair...