Client
Loop Earplugs (UGC + Influencer)
Industry
Consumer
Tags
Brand Management, Performance Marketing
Driving Trackable Sales and Brand Presence through UGC, Influencer Marketing, and Brand Partnership Ads
+640%
ROAS
+1M
Monthly Impressions
100+
Creator Collaborations
Introduction
Loop Earplugs, a Belgian premium earplug brand known for merging hearing protection with lifestyle design, set out to deepen its consumer connection in Korea, a market where lifestyle purchases are validated through creators before consumers buy. Having established its Korean commerce foundation, the brand needed authentic Korean voices to convert awareness into sustained sales momentum.
To achieve this, Loop partnered with expand k to design and operate a full-cycle UGC and influencer marketing programme. The engagement covered the full influencer marketing cycle, from creator sourcing, campaign guidelines, contracting and payment operations through to sales attribution and the amplification of top-performing creator content via Meta Brand Partnership Ads.
Challenges & Objectives
Korea's influencer landscape is saturated and expensive, and conventional sponsorship models often deliver reach without accountable returns. Loop needed a credible engine that could produce localised UGC, track sales performance, and feed high-performing creator content into paid campaigns, extending the value of each piece of content beyond its organic lifespan.
There were 3 main objectives for the project: to build a diversified creator portfolio matched to Loop's core use cases across sleep, focus, concerts, and parenting; to implement a promotion campaign structure enabling direct sales attribution per creator; and to convert the strongest UGC into paid Brand Partnership Ads for compounding returns.
Activities
expand k built and managed Loop's creator portfolio across Instagram, YouTube, Naver Blog, and X, operating 100+ product seeding and collaboration cycles end-to-end. Every engagement was managed in-house, covering briefing, Korean-language campaign guidelines, contracting, delivery logistics, and payment processing. The promotion campaign structure combined revenue share, fixed fee, and sponsorship models, with unique discount codes assigned per creator for full sales attribution.
A monthly content engine of long-form, short-form, and UGC assets kept the programme continuously supplied with fresh material, with top creator content repurposed into Meta Brand Partnership Ads. Creator-level sales, ROAS, and BPA performance were tracked through integrated dashboards for continuous portfolio optimisation.
Results
The programme turned creator marketing into one of Loop's most accountable sales channels in Korea. Creator-attributed sales tracked through unique codes delivered a 640% ROAS, while Brand Partnership Ads amplifying top UGC generated over one million monthly impressions, with 100+ creator collaborations executed across IG, YouTube, Naver Blog, and X.
expand k built Loop's UGC & influencer collaboration engine in Korea, turning authentic UGC into a measurable, repeatable acquisition channel. By connecting creator content, sales attribution, and paid amplification into a single system, expand k gave Loop a programme that compounds in both credibility and revenue.