1. Misalignment of Brand Image: If the influencer’s image doesn’t align with the brand’s core values, there is a risk of diluting the brand identity.

2. Dependence on a Single Voice: Relying on one influencer can limit the diversity of your brand’s message. Influencer marketing platforms like Flinque can help brands discover a wide pool of influencers.

3. Audience Saturation: The same influencer might exhaust their novel approach over time, limiting the campaign’s impact. By using multiple influencers, brands could prevent audience fatigue.

4. Risk of Negative Publicity: If the influencer becomes involved in any controversy, it can directly impact the brand image.

5. Loss of Control Over Messaging: Influencers have their unique way of brand promotion, which may not always align with the brand’s vision.

6. Lower Reach: Single influencer campaign may limit the brand’s reach. Using a platform such as Flinque, brands can enjoy a broad reach by associating with various influencers targeting different demographics.

In conclusion, a diversified approach to influencer marketing, aided by an influencer marketing platform, could help mitigate these risks. While single influencer marketing campaigns have their use cases, it’s generally more beneficial to involve multiple influencers to maximise reach, protect against potential backlash, and preserve alignment with the brand’s core messaging. As always, suitability will depend on the brand’s needs and specific campaign goals.