The exosome method for brows, hair and skin, recognized by ExoCoBio.
ExoBrows is the professional training created in Brazil by Brenda Terra Zimmer, recognized by ExoCoBio as a Scientific Researcher in Exosomes. This dossier presents the method, the certification and documented patient results, so ExoCoBio distributors around the world can recognize the ExoBrows certificate as a qualification to purchase ExoCoBio products.
“Brenda is the pioneer.”
Dr. Byong Seung Cho, founder and CEO of ExoCoBio, speaking in São Paulo about Brenda and the ExoBrows protocol.
Brenda is the pioneer, the one who really started all of this with the ExoBrows protocol. We are very happy to develop this new protocol with Brenda.
Brenda is the original inventor of the ExoBrows protocol in Brazil, and her protocol is becoming more and more popular. We have just invited Brenda to RAES Seoul 2026.
Videos with Portuguese subtitles. Quotes translated from the subtitles.
Invited by Dr. Byong. Recognized in Korea.
Dr. Byong Seung Cho came to know Brenda's clinical research with exosomes applied to brows, skin and hair. He invited her to ExoCoBio, to speak at KIMES and RAES in Seoul, and to train professional SPAs in Korea. Together they are building a collaborative academy.
Invited by Dr. Byong to speak at one of the largest medical and aesthetics congresses in the world, presenting ExoBrows eyebrow regeneration results.
Brenda hosted Dr. Byong in São Paulo for a closed event with ExoBrows students.
Speaker at RAES 2026, invited to train Korean SPA professionals, and recognized by ExoCoBio as a Scientific Researcher in Exosomes.
Dr. Byong Seung Cho
Dr. Byong teaches a 1 hour 32 minute scientific class on exosomes inside the ExoBrows course, in a module dedicated to ExoCoBio. Every certified professional learns the science directly from ExoCoBio's founder.
Korean Regenerative Brazil Summit
On August 21, 2026, Brenda hosted Dr. Byong in São Paulo for a closed event with ExoBrows students: an international lecture by Dr. Byong, a trichoscopy session by Brenda and a practical demonstration.
Five protocols. One clinical standard.
Brenda created the ExoBrows and ExoHair protocols in Brazil in 2024, from her clinical work with exosomes, and extended the method to beard, lashes and skin. The approach acts on follicle biology: it supports the growth phase, stimulates cell proliferation, activates melanocytes and reactivates dormant follicles. It regenerates instead of camouflaging.
ExoBrows
Eyebrow regeneration: density and fill of sparse or over-plucked brows.
ExoHair
Scalp protocol for thinning, shedding and loss of density.
ExoBarba
Beard protocol for gaps and uneven growth.
ExoLash
Eyelash protocol for length and density.
Exoderma
Skin protocol for texture, tone and quality.
Non-invasive by design
All protocols are non-invasive. For professionals who are not licensed health practitioners, skin preparation is limited to microneedling of up to 0.25 mm, in line with Brazilian rules for aesthetic professionals.
A real scientific library
Students receive about 100 reference documents, including 55 scientific articles on exosomes and regeneration, plus Dr. Byong's scientific class.
Every case documented
Students learn a standard for before and after photography and session records. That standard is the basis of the results shown below.
- What exosomes are and how they act
- Anamnesis and contraindications
- Purity and concentration assessment
- Dermatoscopy
- Storage and handling control
- Microneedling and drug delivery
- The ExoBrows protocol step by step
- Practical classes for all five protocols
- Post-treatment care and patient journey
- Live Q&A and in-person immersion
What the ExoBrows certificate means
A certified professional has completed the full training, passed the final exam and learned the safety scope of each protocol.
- 1Exosome science
Foundations of exosomes and regeneration, including Dr. Byong's scientific class.
- 242 hours of training
14 modules and 67 lessons, from assessment to follow-up, with practical classes for each protocol.
- 3Final exam
52 questions, with a minimum score of 70% required before any certificate is issued.
- 4Two certificates
A university extension certificate issued with UniFatec, a university center accredited by Brazil's Ministry of Education (e-MEC), registered in the university's records; and the ExoBrows completion certificate with a unique digital signature.
- 5Ongoing support
Biomedical support seven days a week after certification, for case questions and safety.
An online verification page is being implemented. Until then, any ExoBrows certificate can be confirmed directly with our team using the contact below.
Before and after, across all five protocols
Patient cases from the ExoBrows community: Brenda's clinic and certified professionals in their own practices. Each image shows the same patient before and after treatment.
Results vary with each patient's biology, history and adherence to the protocol. Images published with patient consent. Click any image to enlarge.
Our request: recognize the ExoBrows certificate
ExoCoBio distributors currently supply physicians only. We ask that, in every region where ExoCoBio operates, professionals holding a valid ExoBrows certificate be enabled to purchase ExoCoBio products, within the non-invasive scope they were trained for.
42 hours, a final exam with a 70% minimum score and training in the safety scope of each protocol.
Every certificate carries a unique code and can be confirmed with the ExoBrows team.
Taught by a researcher recognized by ExoCoBio, with Dr. Byong's own scientific class inside the course.