Japanese skincare brand grows Amazon sales by 213%

About the brand

Onsen Secret is a premium skincare brand rooted in the healing tradition of Japanese hot springs. Their mineral-rich formulas deliver spa-grade hydration, rejuvenation, and anti-aging benefits — bringing the restorative power of nature into everyday routines.

Loved by customers for their purity and proven results, Onsen Secret bridges ancient wellness practices with modern skincare innovation, making luxury treatments accessible at home.

The Problem

Onsen Secret had all the fundamentals in place, strong conversion rates, and steady traffic. But growth had stalled.

• Every attempt to scale led to shrinking profitability.
• Rising ad costs made expansion increasingly risky.
• Without a clear strategy, pushing for growth meant gambling with margins.

To move forward, Onsen Secret needed a smarter, more efficient path to scale profitably.

The Solution

We helped Onsen Secret scale profitably by working with the data, not against it. Our strategy focused on efficiency, precision, and long-term growth:

1. Double Down on High-Converting Listings:
Instead of pouring budget into underperformers, we prioritized PPC investment in products that were already converting well. This accelerated growth faster, at lower risk, and created a stronger foundation for scale.

2. Shifted from ROAS to TACoS:
ROAS alone was hiding inefficiencies. By transitioning to TACoS (Total Advertising Cost of Sales), we gained a complete view of ad performance and its impact on profit — enabling smarter, more sustainable spend decisions.

3. Fix Listings, Then Scale Keywords:
We optimized listing content first — titles, bullets, images, and A+ content to lift conversion rates. With higher-performing listings in place, we could then go after competitive keywords aggressively. Amazon’s algorithm rewarded the improved performance with stronger organic placement, multiplying both paid and organic visibility.

4. Strategic Product Launches & Global Expansion:
Beyond existing products, we built a data-backed launch playbook for new SKUs — tailored around keyword demand, conversion potential, and category trends. Several new products became top sellers quickly, while expansion into international Amazon marketplaces unlocked new revenue streams and positioned Onsen Secret as a global premium skincare brand.

The Results

By realigning spend around efficiency and high-performing products, Onsen Secret unlocked scalable, profitable growth on Amazon - turning what was once a flat performance curve into sustained upward momentum.

Total Amazon sales surged by 311%, while profit nearly tripled - rising from $23,409 to $91,351.

• Advertising efficiency improved dramatically, reducing wasted spend and amplifying returns by shifting from ROAS to TACoS as the guiding KPI.
• Top-converting listings now dominate organic search rankings, driving compounding gains from both paid and organic channels.

Through data-led prioritization and listing-first optimization, Onsen Secret achieved sustainable, profitable scale - growing faster without gambling margins.