Recently, in the global market, the standards for measuring influencer marketing effectiveness are fundamentally changing. Platform-agnostic UGC now accounts for 35% of global campaigns, surpassing TikTok (21%), and TikTok-focused campaigns have declined 48% year-over-year. This is not simply a shift in platform preference, but demonstrates that brands, from a marketing fundamentals perspective, are reverting to ‘asset accumulation.’
Why Follower-Based Influencer Marketing Effectiveness Has Hit Its Limits
For a long time, many brands have used follower count as the key metric when selecting influencers. However, this is fundamentally the same trap that performance marketing fell into by being fixated on ROAS. The more brands obsess over short-term impression metrics, the more brand self-sustainability diminishes, and the cycle of addiction to increased ad spending repeats.
Here’s the failure pattern we frequently witness in the field. Millions of dollars are spent on a single large influencer, yet the content is exposed only on the day of posting and then disappears. There’s almost no asset left for the brand. True influencer marketing effectiveness should be measured not by ‘one-time viral exposure’ but by ‘reusable content assets.’
The Real Reason UGC Drives 29% Higher Conversion Rates
The reason UGC achieves 29% higher conversion rates than traditional influencer content cannot be explained by the abstract term ‘authenticity.’ The key lies in language that precisely identifies consumer needs and a structure that allows the content to be repeatedly leveraged across multiple touchpoints.
- STP Perspective: UGC naturally reveals the needs of target segments because it incorporates the language of actual users
- USP Perspective: Users independently testify to the differentiators the brand wants to emphasize
- Asset Perspective: Can be repurposed for extended periods across email, display ads, and social media channels
Measuring Influencer Marketing Effectiveness: What Needs to Change
The approach of merely increasing ad spend without improving brand fundamentals no longer works. To truly elevate influencer marketing effectiveness, you must restructure influencer selection criteria, budget allocation, and performance metrics. ‘Content reusability potential’ rather than follower count, and ‘contribution to asset accumulation’ rather than one-time exposure, must become the new KPIs.
Frequently Asked Questions
How do you measure influencer marketing effectiveness beyond ROAS?
Looking only at a single campaign’s ROAS traps you in short-term thinking. You must also examine asset-based metrics like content reuse frequency, conversion contribution from other channels, and shifts in branded search volume. The reason UGC achieves 29% higher conversion rates is precisely because it accumulates value across multiple touchpoints.
Can small brands achieve influencer marketing effectiveness with a UGC-focused strategy?
In fact, it’s even more suitable. Rather than relying on a single large influencer, accumulating UGC that precisely captures real users’ needs allows you to build long-term assets with minimal budget. However, marketing fundamentals that clearly define what constitutes needs and what represents differentiation must come first.
Insights from Soulpapa Marketing — Korea’s digital marketing agency.
Original Korean article: https://soulpapa.co.kr/2026/05/18/influencer-marketing-effect-ugc-shift/
