In America there is a HUGE market in feminine "deodorants" and douches because the marketers have been so successful in convincing women that they "need" these (despite the fact there is evidence that they can contribute to a higher rate of vaginal infection because they alter the natural flora.) At least it hasn't got that bad here (and let's hope it doesn't.)
I think it's changed now, but I remember when you couldn't show a woman actually wearing a bra in a bra advert. They could show one on a mannequin or a woman could wear one over a poloneck, which frankly, looked really stupid. That was in America, so not sure if it was the case here and I think that has at least changed.
I seem to recall there was also a prohibition in showing armpits in deodorant commercials.
Having said that, I remember thinking the adverts for sanitary towels and tampons in the UK were so coy - cartoons of women cycling through a country lane with pretty music, that sort of thing. The adverts in America were more graphic - a tampon in a test tube turned upside down to show how absorbent it was, for example. But yes, the liquid was always blue and never red, like it was only for posh women! :)