Peores promociones de productos por celebridades

This promotion is considered a notable failure because Samsung's own spokesman, LeBron James, publicly tweeted his frustration after his Galaxy phone erased all its content. The incident undermined the brand's credibility and the endorsement's effectiveness, as a paid ambassador experienced a major failure with the very product he was meant to promote.

Hulk Hogan's numerous ventures into product markets, such as his Pastamania restaurant or energy drinks, have consistently failed. These projects did not resonate with the public long-term, resulting in quick closures and significant losses, demonstrating a lack of commercial success despite his celebrity status.

This product promotion generated massive controversy due to its tone-deaf portrayal of social activism, trivializing important movements. Kendall Jenner's casting was criticized for her lack of connection to the issues addressed, leading to widespread backlash and the ad's withdrawal.

This promotion is considered a failure due to Kellogg's swift termination of the sponsorship contract. The image of Michael Phelps smoking marijuana, which became public shortly after his successful endorsement, directly clashed with the healthy lifestyle image the cereal brand aimed to project, leading to the non-renewal of the agreement.

Kylie Jenner's promotion of Snapchat is considered one of the worst because her negative tweet about the app's redesign caused a $1.3 billion drop in the company's market value. This incident demonstrated the detrimental impact a celebrity can have on a brand when their opinion is unfavorable, resulting in a massive financial loss.

This promotion is considered one of the worst due to the immense controversy and commercial failure it generated. Pepsi was forced to pull the ad and cancel Madonna's tour sponsorship following outrage from religious groups over the "Like a Prayer" music video, resulting in millions in losses and significant damage to the brand's reputation.

This promotion exemplifies a poor choice of brand ambassador, as actress Helena Bonham Carter publicly admitted she did not wear makeup, directly contradicting the nature of Yardley's products. The lack of authenticity in the celebrity-brand association led to the swift cancellation of her contract, highlighting the importance of consistency in advertising campaigns.

This promotion exemplifies a failed campaign due to the celebrity's unexpected action. David Beckham shaved his head halfway through his £4 million contract with Brylcreem, a hair product brand, completely undermining the campaign's credibility and confusing consumers.

Jared Leto's promotion of Twentynine Palms is considered a failure due to strong criticism over its excessively high prices and the perception that Leto was not genuinely interested in beauty products. The brand also suffered a premature termination of the relationship with Leto, citing breach of contract and mismanagement, which led to the cessation of online sales.

Tiger Woods' promotions are considered among the worst due to the negative impact his infidelity scandal had on his sponsors' image. Although some brands like Nike, Gatorade, Gillette, and EA Sports stood by him, the market value of the sponsor portfolio lost over 2% after the scandal's onset, resulting in a net loss of $7.5 million in profit for the industry.