Announcer: We want every woman to know that her hair doesn't have to be dull. Even if we have to prove it. (tires squealing) (footsteps clamoring) (car doors slamming shut) (car engine revving) (door clicking open) Announcer: We think that if you use liquid Prell for just one shampoo, (water trickling) if you see for yourself how liquid Prell cleans. (water trickling) And rinses itself away, so there's no film to dull your hair, you'll know that liquid Prell can give you... (car honking) bright, shining, beautiful hair, but please prove it to yourself. Don't make us have to prove it to you.