Influencer endorsement channels a creator’s audience trust onto a product, service, or idea. Its distinctive power is parasocial bonding (→ T2.6): followers develop a one-sided sense of friendship with a creator they watch daily, and that felt relationship transfers to whatever the creator recommends. When the recommendation is honest, disclosed, and grounded in real use, this is ordinary, legitimate marketing. The manipulation lives in what is hidden.
The problem cases share a shape: a paid promotion presented as personal enthusiasm, with the payment obscured. Missing or buried disclosure, a sudden promo outside the creator’s usual lane, lifestyle framing in place of testable specifics, and an affiliate code bolted to a “today only” deadline all mark a transaction dressed as a tip from a friend. At the far end, undisclosed endorsements shade into promotion of outright scams (→ Cat 24).
The defense is to hold the person and the product apart. Treat any promotion without a clear #ad or paid-partnership label as suspect — such disclosure is legally required under the U.S. FTC Endorsement Guides — and verify the product through disinterested reviews and primary sources rather than the endorsement itself. Name the parasocial pull when you feel it: liking the creator is a reason to enjoy their content, not evidence about the thing they were paid to show you.