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In Brazil Nivea demos its fun new ad. for sun protection! and I love it.

AgenciaClick created a giant outdoor mosaic composed of white beads that react to the sun's ultra violent rays (here.). The advertisement shows a woman suning herself in stunning color.

During the day, when the sun is scorchin, the colors are bright with white lettering remaining white due to the artist slathering them with Nivea Sun. At night the entire surface is white. This is really a great concept!
                                                                                          (source.)