About the Faculty of Trichology
Advancing Trichology Through Education and Collaboration
The Faculty of Trichology was founded with a shared vision: to create a collaborative learning community where professionals can expand their knowledge, challenge ideas, and advance the understanding of hair and scalp health.
We believe that no single profession holds all the answers. By bringing together expertise from across the hair, health, and wellness industries, we create opportunities for meaningful learning, respectful discussion, and stronger professional relationships.
Our goal is simple: to help raise the standard of trichological education through evidence-informed learning, interdisciplinary collaboration, and a commitment to lifelong professional development.
Our Mission
To advance the understanding of hair and scalp health by providing accessible, evidence-informed education and fostering collaboration across professions.
Our Vision
A future where professionals work together, share knowledge openly, and improve outcomes for the people they serve.
What We Believe
Knowledge grows when it's shared.
Collaboration leads to better outcomes.
Curiosity is the foundation of lifelong learning.
Evidence should guide education.
Respect for every profession strengthens our industry.
Meet the CoFounders
The Faculty of Trichology is led by a multidisciplinary team of educators, clinicians, and industry professionals who are passionate about advancing the profession through education, research, and collaboration.
Together, we are committed to building a trusted learning community where professionals can connect, grow, and contribute to the future of trichology.
Sergio Cardona
Niche: Technical Foundations
Learn More About Sergio
Sergio Cardona brings generational expertise to The Hair Wire as a second-generation Trichologist trained under the uncompromising standards of his father, a pioneer in Puerto Rican barbering and trichology education. His path started early—he began studying trichology in high school, working side-by-side with his father, and eventually earned his certificate only after completing a Biology degree and proving he was ready to carry the family legacy forward.
Rooted in both scientific training and lived tradition, Sergio blends textbook knowledge with hands-on mastery. He’s taught hundreds of professionals across Latin America and beyond, building a reputation for his practical, no-fluff teaching style and sharp clinical eye.
He also runs a successful private practice, where his work spans everything from complex diagnostic cases to mentorship for emerging trichologists. Over the years, he’s built an extensive training library filled with real-world, case-based insights—always centred on what actually works in practice.
At The Hair Wire, Sergio leads the charge in technical education, protocol development, and practitioner case reviews. His role in the Faculty of Trichology anchors the curriculum in tradition, clinical rigour, and clarity.
His gift? Teaching trichologists how to see—not just with their eyes, but with discernment sharpened by decades of experience. He honours the roots of this work while boldly evolving it for the next generation.
Bissan Debsi
Niche: Functional Medicine
Learn More About Bissan
Bissan is a Certified Trichologist with over 10 years of experience in the hair loss industry. She also holds a certification as a Functional Medicine Health Coach and has earned a Master’s in Biotechnology and a Bachelor’s in Biochemistry. Passionate about health and wellness, she integrates her scientific expertise with holistic approaches to address the root causes of hair and scalp disorders, rather than simply masking the symptoms. Her philosophy centers on achieving healthy hair by treating underlying imbalances within the body, creating long-lasting results.
Bissan has worked in Dubai, California, and now Florida, and she serves clients worldwide through virtual consultations. As an educator and the Director of Education at the Holistic Practitioners of Trichology, she teaches and mentors future trichologists, providing advanced training to elevate industry standards. Her career highlights include contributing to innovative research at Stanford University and pioneering Scalp Micropigmentation (SMP) with over 500 successful cases, including high-profile clients. Bissan’s expertise in SMP has transformed the lives of individuals experiencing hair loss by delivering natural, confidence-boosting results.
As the co-founder of The Hair Wire, a leading resource platform for trichologists, Bissan connects professionals with cutting-edge education, research, and technology in hair loss management. Through this platform, she shares valuable insights and fosters professional growth for trichologists worldwide. Bissan’s mission is to empower individuals and professionals by combining scientific knowledge with holistic care. Her dedication to treating the root cause of hair loss and her personalized, whole-body approach make her a trusted authority in the field of trichology.
Her gift? Bridging science and soul. Helping professionals see the bigger picture beneath the follicle. And reminding us that healing the scalp often begins with rebalancing the system behind it.
Kerri Jarrett
Niche: Epigenetics
Learn More About Kerri
Kerri Jarrett is a Certified Trichologist with over two decades of experience in clinical hair and scalp care, advanced cosmetology, and education. She’s trained extensively in trichological diagnostics, scalp neurology, and hair loss treatment—while also diving deep into the psychosomatic and behavioural patterns that show up through the hair.
Her approach is equal parts science, strategy, and self-awareness. Kerri doesn’t treat hair loss at the surface—she reads the patterns, the person, and the body behind it. With a background that bridges trichology, somatic practices, and cognitive therapies, she’s known for her ability to connect hair symptoms to deeper root causes, both physical and emotional.
Kerri is also a serial entrepreneur and creative director, known for building brands and educational tools that are both clinically credible and deeply human. She’s the founder of multiple businesses, including her intention-driven jewelry line, Sentimental Gems, and now serves as the strategic and creative lead at The Hair Wire.
At The Hair Wire, she oversees curriculum design, practitioner development, and brand positioning for the Faculty of Trichology—offering grounded, real-world training for trichologists ready to go deeper and grow bigger.
Her gift? Translating complexity into clarity. Helping trichologists understand the “why” beneath the symptom. And reminding everyone that hair never lies—it’s always telling a story, if you know how to listen.
We’re more than hair. We’re a community, an education platform and a movement.
Our mission is to raise the standard — reigniting the heart of this industry with integrity, purpose, and connection. We’re also committed to bridging the gap between cosmetology, dermatology, and general practice, creating a more collaborative and informed approach to hair and scalp health.
ABOUT
The Hair Wire is a trusted resource created by trichologists, for anyone seeking clarity around hair and scalp health. With clinically backed information, we simplify complex hair loss conditions and offer professional insight, education, and solutions—one strand at a time.
DISCLAIMER
The content on The Hair Wire and Faculty of Trichology is intended for educational and informational purposes only. It is not a substitute for medical advice, diagnosis, or treatment. While our material is guided by professional experience and clinical trichology, we encourage individuals to consult with their own healthcare or wellness providers when making personal health decisions. The Hair Wire offers professional insights, not medical directives.
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