Ella had been using an imported brand of shampoo for several years, but she could no longer find it anywhere. as she was considering what kind of shampoo to try, she was surprised to see ads for procter & gamble's head and shoulders, which was being promoted as a glamorous health-oriented product. she had always thought of head and shoulders as an anti-dandruff shampoo. the new ads suggest that head & shoulders has been:

rebranded

Explanation:

Rebranding tries to give a new image to an old product, in order to make it look attractive and successful. This new look will try to make the product more attractive and successful.

Head & Shoulders was seen as an anti-dandruff shampoo, and it was quite successful in its specific market. But then it changed its identity to be seen as a glamorous health oriented shampoo. If people see Head & Shoulders that way then its marketing strategy was very good since there is nothing glamorous in dandruff.