Conversion Lift with Disciplined PPC Efficiency
Objective: improve conversion rates while reducing PPC costs and controlling ACOS/TACOS — without chasing additional sales growth.
Clicks that weren’t converting efficiently
Before optimization (February), conversion performance and ad efficiency were misaligned with the goal. Overall conversion sat at 5.20%, PPC conversion at 6.00%, and ACOS/TACOS were running hot at 59.00% and 35.00% — a combination that typically points to traffic that isn’t converting efficiently, and/or a listing experience that isn’t building enough trust to turn clicks into purchases at a sustainable cost, a common pattern for a newer serum competing in a crowded K-beauty category.
Build trust with UGC, then discipline PPC
UGC to Increase Trust and Reduce Purchase Hesitation
In March, the Medicube PDRN Pink Peptide Serum campaign implemented three UGC video assets developed by Vortex Wise, showing the serum’s texture and glow-up results, a before/after routine addressing uneven tone, and a close-up demonstrating the dropper application. UGC helps by showing real usage, addressing objections visually, and strengthening credibility — improving conversion quality from both paid and organic traffic.
Disciplined PPC Execution to Control Waste While Conversion Rises
Alongside UGC, PPC execution was kept disciplined: spend was reduced and held under control while the account sustained stronger conversion rates. The goal was not aggressive sales growth; it was a stable, conversion-focused system where efficiency metrics stayed within acceptable ranges.
Month-by-month performance
| Month | Sales | Overall Conv. | PPC Conv. | ACOS | TACOS |
|---|---|---|---|---|---|
| February | $6,240.50 | 5.20% | 6.00% | 59.00% | 35.00% |
| March | $6,510.90 | 8.30% | 12.80% | 38.50% | 21.50% |
| April | $6,395.60 | 9.40% | 14.90% | 27.80% | 14.80% |
| May | $6,680.25 | 10.15% | 16.60% | 21.00% | 10.12% |
The Medicube PDRN Pink Peptide Serum
The product is the Medicube PDRN Pink Peptide Serum with Salmon DNA (1.01 fl. oz) — a K-beauty facial serum formulated with PDRN (Sodium DNA) 1% and a 5-type peptide complex, targeting dull, tired-looking skin to reveal a plumper, dewier glow. The UGC video assets showed the serum’s texture and glow-up results, a before/after routine addressing uneven tone, and a close-up demonstrating the dropper application — the kind of real-use proof a written listing alone can’t provide.
Over four months, UGC-driven trust and disciplined PPC execution lifted overall conversion from 5.20% to 10.15% and cut TACOS from 35.00% to 10.12% — without chasing additional sales growth.