Fear not, ladies: finally, there's a shampoo appropriately colored for you, as Lustre Creme is "the one shampoo made just for girls. Because pink is just for girls. You're a girl, aren't you?" Click to enlarge. [Vintage Ads]
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I wondered about the fine print on my bottle of Selsun Blue "Warning: Prolonged exposure to product may cause spontaneous growth of functioning penis, because blue is just for boys."