A Message from the Representative
Hello everyone,
My name is WEIFAN CHIA, the Managing Partner of IPPONGI LLC Japan
and Special Assistant to PROSUNFUN Biotech R&D Co., Ltd. in Taiwan.
I would like to share a little about the vision behind our brand, PROTAI,
and the belief that drives us — to bring the ultimate wellness to life itself.
In one simple phrase, PROTAI is the peptide of happiness.
Allow me to tell you why this mission is so deeply personal to me, and how it all began.
I founded the PROTAI Beauty & Wellness brand here in Japan, but its origin lies in PROSUNFUN Biotech in Taiwan — a company that has spent more than a decade researching thousands of peptide sequences. Among them, the team discovered a unique peptide with the potential to help regenerate optic nerves.
In 2022, when my father fell ill, I returned to Taiwan after many years. Until then, I hadn’t fully understood the kind of research his company was pursuing. As I read through the PROTAI research data for the first time, I immediately felt — this is something truly special for the world.
From that moment, I started from zero in Taiwan — searching for distribution channels and partners who shared the same passion. With tremendous support, we achieved a total of 80,000 bottles sold by September 2025, helping many people regain comfort and confidence in their eyes.
Through these experiences, I came to realize something profound:
It is not only the peptide itself that matters, but also the heart of the people
who wish to use it meaningfully.
Rather than presenting PROTAI as just another biotechnology product, I see it as a gentle expression of care — a way to bring healing and vitality into the daily lives of those struggling with fatigue, stress, or dryness.
We often say, “The eyes are the windows to the soul.”
And when those windows are tired, many people have told us,
“PROTAI has truly comforted me.”
These voices come not only from the elderly, but also from students preparing for exams, professionals working long hours in front of screens, and countless others in our modern,
digital world. To all of them, we wish to deliver moisture, relief, and happiness.
That is why I call PROTAI — the peptide of happiness.
Its mission is simple yet powerful:
to make our world, and our everyday lives, a little brighter and more fulfilled.
That, to me, is the true value of PROTAI.
By combining the advanced biotechnology of our Taiwanese parent company with the precision and craftsmanship of Japan, my goal is to deliver this gift to those who need it most — in the most authentic and human way possible.
This has become not only my dream, but my life’s purpose.
Since encountering PROTAI, I too have found healing through it.
And each time someone understands its value and feels its gentle effect, I experience a deep sense of joy and meaning.
Throughout 2025, I have devoted all my time and heart to shaping PROTAI here in Japan.
More than any result, I believe what truly matters is that our work continues to bring
happiness to others.
In Taiwan, I’ve met so many people whose lives were quietly transformed by PROTAI —
each encounter felt like witnessing a small miracle.
Now, I would like to invite you to share that same miracle —
through IPPONGI, a wellness brand born in Kyoto, Japan —
and to dream together with us.
Thank you sincerely for taking the time to read this message.
From the bottom of my heart, I offer you my deepest gratitude.
【PROTAI – Safety Certifications and Invention Patents】
Officially registered with the Personal Care
Products Council (PCPC) and recognized
under the INCI name: “Pentapeptide-80.”
U.S. Invention
Patent No.: ASB0004US
Taiwan Invention
Patent No.: I674124
Certified by SGS:
No harmful heavy metals or microorganisms detected.
Verified for high safety and quality.
