LONDON—For decades, marketing around women’s periods and genitals has often been laughably unrealistic at best and destructively shame-inducing at its worst. In 2017, Essity dramatically dumped out the blue liquid and other ridiculous tropes of tampon and pad advertising with the launch of #BloodNormal, a campaign nearly unprecedented in its ambition to rewrite an entire category of marketing aimed at 51% of the world’s population. On Thursday, the company’s newest campaign—”Viva La Vulva,” created in 2018 to promote a new…