Dollar Shave Club asks men to "Shave Money, Shave Time" in its commercials; it offers high-quality blades available by mail for a few dollars a month. Dollar Shave Club’s advertising promotes the time- and money-saving aspects of its product as an example of

Product differentiation.

Explanation:

In a perfectly competitive market businesses produce and supply goods that are homogenous and so they need to compete to sell to the consumer. Having a differentiated product in this market gives a competitive advantage where the firm's product is distinct from others.

Dollar shave club it offers high-quality blades available by mail for a few dollars a month. Dollar Shave Club’s advertising promotes the time- and money-saving aspects of its product.

This is a form of product differentiation.

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