Ads for douches seem to be laced with the intent to harm women's self-esteem, not to mention vaginas, as douching can actually cause infections.
But douche ads have an interesting history. The douche was originally considered a birth control method, back when birth control was illegal. Because of this, it was socially camouflaged as a "hygiene product."
From there, the ads evolved into mothers and daughters with cable-knit sweaters tied around their shoulders, having talks about "feminine odor" on the beach.