This is the reason why when we see a really good OOH communication, we remember it for a long time.
An example for such one is the Pantene’s OOH ponytail, illustrating the message for the “really strong hair”.
The rapunzel-style is not only cute, but just the right one for such kind of a product. And the male climbers make the impression even stronger. This OOH ponytail was realized in Toronto. I wish there were more copies of it worldwide:)