Recently Colgate$-$Palmolive introduced Colgate Enamel Health toothpaste, one that claims to replenish and polish tooth enamel, the hard outer layer of the tooth that provides a protective barrier to inner layers. This new formula helps to separate the Colgate product from its top competitors, such as Crest. What marketing strategy did Colgate$-$Palmolive use here?

product differentiation

product segmentation

market expansion

usage segmentation

psychographic segmentation