The double standard of aging is an essay from 1978 by Susan Sontag, in which she writes about the brutal double standard whereby women are expected to always remain young looking and men are expected to grow more handsome, more attractive as they grow older. There's a built in inequality between men and women when it comes to attractiveness and beauty standards, by which men increase their value or status as they age and women become decreased in value or status. And this means that men are expected to grow up from being boys into men. And that women are expected to remain forever prepubescent, which is, of course a horribly toxic idea that makes women feel invisible and impotent as soon as they are actually of age and would otherwise be capable of competing in society amongst equals. And this is what she calls the double standard of aging men age up ⬆️, women age down⬇️.