It turned out to be a treatment for something called bacterial vaginosis. Now, I don’t know what bacterial vaginosis is, but the image of the pretty little cartoon lady suddenly looked less sweet and wholesome, which I suppose is the point of the ad.
And no, I didn’t Google it, but I strongly suspect that:
a. I wouldn’t have any use for such a preparation.
b. Had such an ad been shown on the TV when I was a kid, the Advertising Standards Authority would have been buried under a deluge of complaints from scandalized Middle England. Standards have clearly fallen a lot in the intervening years.