Sunsilk ad starring Madonna ... why? why?

Above is the new Sunsilk commercial featuring a track from Madonna's forthcoming album, and a lot of Madonna too. Still can't figure out why she thinks that promoting this particular brand is a good idea. I've got no problem with her, of all people, doing endorsement deals, but Sunsilk shampoo? Sheesh. Given the new album great timing on the rumors of marital strife though.