Firstly, in the upper left of the picture, it is an image of the product itself which is called the "given" part. Then we can see a handsome man tenderly ruffling the lady's hair with his fingers on the right side of it which should be the "new" part. The two halves consist of the "ideal" part of the poster. So, the lower section, the introduction providing newest product on promotion or discount activity is the "real" part which give us more factual information. From another perspective, the charming girl’s smile is a kind of interaction with viewers as if appealing us to buy this product.
 

Through the thrilling scene and the detailed copy, the shampoo becomes more attractive for  the audiences.