I just saw a Gillette shampoo commercial, and I noticed something. They say the same things they say in women's shampoo commercials, but they play rock in the background, use blue and black color schemes, and growl out all of their words. If they put lots of pink, light green, and flowers with a woman narrating, talking about vitamins and soft hair, then BOOM: they have a woman's shampoo commercial.
Very original. I guess a shampoo commercial with Ultimate Fighting Championship fighters, axel grease, and sweat wouldn't really drive the grooming point home.