The company
COSRX is a Korean skincare brand built around what it calls "ingredient-led" formulation — minimal, active-ingredient-forward products rather than heavily marketed multi-step routines. Its Snail Mucin essence is one of the most recognized products in the K-beauty category in Western markets, and the brand sells across the US, UK, and continental Europe.
Where they started
K-beauty as a category was already having a moment on TikTok Shop, but a moment is not a program — a brand that only shows up when a single video happens to go viral has no way to plan inventory, staffing, or spend around that. COSRX and its agency, House of Marketers, built what they describe as an "always-on, full-funnel" creator engine specifically so the brand's TikTok Shop presence didn't depend on catching lightning once.
What they did
The program ran across the US, UK, and Europe simultaneously, structured around:
- A multi-tier creator framework — top-tier creators running full "routine" content, mid-tier creators doing product reviews, and micro/nano creators specifically optimized for TikTok Shop conversion (not just views).
- Monthly gifting waves tied to hero products and new launches, run on a repeatable cadence rather than as one-off sends.
- Market-specific execution — content and creator selection tailored per region rather than one asset set pushed everywhere.
- A 17-day pop-up activation in Paris, using an in-person retail moment to amplify the always-on digital program rather than running as a separate initiative.
The numbers
House of Marketers' case study reports 2x sales growth and a 15% TikTok Shop uplift attributable to the program, with 2–4 million monthly impressions across markets, an 85% posting rate on gifted content and a 93% posting rate across all creators in the program (both unusually high completion rates for influencer seeding, where no-shows are typically a bigger problem than results). The Paris pop-up alone generated 3.2 million organic views and an 18% lift in Paris DTC sales. Separately, trade press (Cosmetics & Toiletries) corroborates that COSRX products — including a peptide eye-patch product that went viral via creator Mikayla Nogueira — drove real, independently-observed category momentum on TikTok Shop over the same general period, which is consistent with, though not identical data to, the agency's own reported figures.
Source: House of Marketers' COSRX case study. TikTok Shop uplift: 15%. Paris pop-up DTC lift: 18%.
Why this worked
The detail worth taking seriously here isn't the 2x headline — it's the 85-93% creator posting rate. Most gifting-based influencer programs lose a large share of participants to no-shows (product received, no content posted), which quietly erases a chunk of expected reach before a single view is counted. A program built around a repeatable monthly cadence, clear tiering, and market-specific briefs is a program that's easier for creators to actually execute against, which is very likely why COSRX's completion rate ran so far above what's typical for gifting-based seeding.
What to take from this if you're earlier in this path
"Always-on" doesn't have to mean expensive or huge — the structural pieces (a repeatable monthly cadence, a tiering system so budget goes to the right creator type for each job, and a TikTok Shop affiliate/commission layer under the gifting) are what this site's own TikTok Shop Affiliate & Creator Program Playbook walks through building at any scale.
FAQ
How much of this result was really the viral Mikayla Nogueira video rather than the always-on program? They're not the same thing, and crediting one to the other would overstate both — the always-on program (House of Marketers' case study) and the viral eye-patch moment (reported separately by trade press) both happened in the same general period for the same brand, which is a reasonable sign the brand's broader creator strategy created conditions where a viral moment was more likely to convert, but the two are separately sourced claims, not one dataset.