Introduction
Tree of Life is one of the most recognized skincare brands known for clean ingredients, science-backed formulations, and consumer-trusted results. When the brand sought to expand its anti-aging collection with a new Retinol Serum, they needed a manufacturing partner capable of delivering advanced formulation expertise, strong supply chain support, and consistent high-quality production.
This is where BUNJOIN stepped in.
As a professional skincare manufacturer specializing in active serums, anti-aging solutions, and private label production, BUNJOIN collaborated closely with Tree of Life to bring a high-performance Retinol Serum from concept to market. This case study explains how the partnership worked, how the formula was developed, and how BUNJOIN ensured quality, safety, and timely delivery.
1. Understanding Tree of Life’s Vision and Market Demand
Tree of Life approached BUNJOIN with a clear direction:
- A gentle yet effective retinol serum
- Clean, consumer-friendly ingredients
- Lightweight texture preferred by US and European markets
- Stable formulation with minimum irritation
- Strong anti-aging and skin-renewal benefits
With consumer interest in retinol growing steadily, especially in premium and mass-market retail channels, Tree of Life wanted a formula that balanced efficacy + tolerability — a key challenge in retinol development.
BUNJOIN’s R&D team analyzed market data, benchmarked existing SKUs, and proposed multiple formulation paths based on:
- Retinol strength
- Encapsulation technology
- Supporting ingredients
- Skin-soothing components
- Target texture and absorption rate
2. R&D Formulation: Creating a Stable Yet Gentle Retinol Serum
Retinol is highly effective but unstable. Temperature, oxidation, and light exposure can easily reduce its potency.
BUNJOIN’s formulation team designed a customized solution that met Tree of Life’s standards:
✔ Encapsulated Retinol Technology
To enhance stability and ensure controlled release.
✔ Supporting Active Ingredients
- Hyaluronic Acid — hydration
- Vitamin E — antioxidant boost
- Squalane — barrier support
- Botanical extracts — soothing and skin-repair benefits
✔ Lightweight Gel-Serum Texture
Well-absorbing, non-greasy, suitable for all skin types.
✔ Minimal Irritation Approach
Balancing retinol concentration with barrier-friendly ingredients.
Multiple lab samples were created, tested, and refined until the perfect balance of effectiveness and gentleness was achieved.
3. Transparent Supply Chain & Raw Material Control
Tree of Life prioritizes ingredient transparency — and BUNJOIN matched this requirement through strict supplier selection and documentation:
✔ Certified raw material suppliers
(ECOCERT / COSMOS / ISO-approved)
✔ Full documentation
- COA
- MSDS
- Ingredient specs
- Traceability records
✔ Ingredient stability & compatibility testing
Ensuring retinol does not degrade during storage or in the final container.
This transparent and well-monitored supply chain allowed Tree of Life to maintain their brand promise of clean, safe, and effective skincare.
4. Packaging Compatibility & Stability Testing
Retinol is sensitive. Packaging selection was a crucial step.
BUNJOIN conducted full compatibility testing:
✔ UV-protected amber bottle
to reduce light damage.
✔ Air-restrictive pump and droppers
to prevent oxidation.
✔ 3-month accelerated stability test
(40°C, cycling tests, high humidity).
✔ Real-time stability tests
to guarantee long-term shelf performance.
The results confirmed that the formula maintained potency, color, texture, and efficacy — even after transport and long-term storage.
5. Scaled Production & Strict Quality Control
Once the formula was approved, BUNJOIN began mass production with strict QC systems:
- Raw material inspection
- Weighing and batching verification
- In-process quality checks
- Microbial testing
- Finished goods inspection
- Retinol potency verification
Each production batch matched Tree of Life’s standards, ensuring consistency across every bottle.
6. On-Time Delivery & Supply Chain Support
BUNJOIN coordinated:
- Production scheduling
- Packaging sourcing
- Label review
- Export documentation
- Logistics support for global shipping
Tree of Life received seamless supply chain support from manufacturing to shipping, allowing the brand to focus on marketing and retail expansion.
7. Result: A Retinol Serum That Strengthens the Brand Portfolio
The final Tree of Life Retinol Serum successfully:
- Met the target performance requirements
- Achieved excellent customer reviews
- Matched the brand’s clean beauty positioning
- Expanded their anti-aging line
- Improved their competitiveness in retail and online channels
The collaboration became a model for how BUNJOIN supports global skincare brands with innovation, reliable production, and strong supply chain capabilities.
Conclusion
The partnership between Tree of Life and BUNJOIN demonstrates how a trusted skincare manufacturer can help brands create high-performance formulas and bring them successfully to market. Through scientific formulation, strict quality control, and efficient supply chain coordination, BUNJOIN helped deliver a retinol serum that aligns with global consumer expectations and market trends.
For brands seeking a manufacturing partner capable of handling product development, formulation customization, and stable production, BUNJOIN offers a complete solution — from concept to shelf.
