What persuasive technique is represented by a phrase that implies two contradictory attributes in a product?

The phrase that implies two contradictory attributes in a product is best represented by the concept of paradox. A paradox is a statement that seemingly contradicts itself but may reveal a deeper truth or insight when examined more closely. In the context of persuasive techniques, a paradox can effectively capture attention by presenting an idea that challenges conventional thinking, making the product stand out in a crowded market.

For instance, a product described as "perfectly imperfect" suggests both flaw and excellence, encouraging potential customers to appreciate its uniqueness. This can make the message memorable and provoke thought, ultimately enhancing the persuasive power of the advertisement.

While hyperbole involves exaggerated claims not meant to be taken literally, and contradiction refers to a straightforward opposition without the nuanced depth of a paradox, clarification seeks to make a statement more clear or understandable, which is not relevant to this context. Thus, the use of a paradox effectively balances contradictory ideas, making it the correct choice for this question.