Sundown Solar Protection.

Sundown Solar Protection: an ad that reacts under the sun just as your skin would. Magazine insert that invites the reader to discover an image that shows who uses and who doesn't use Sundown. When exposing the insert to the light (UVB rays), the man, that apparently doesn't use the product, becomes very red, while the woman, with Sundown in her purse and on her body, maintains a sun tan. The redness ceases once the image is taken away from the light.

Agency: DDB, Brasil.