THE MAIN is not just another training program
It’s a unique, high-end, educational experience designed to meet the real needs of advanced aesthetic practitioners.
upcoming masterclasses
THE MAIN is not a school. It’s a refinement institute.
THE MAIN (Medical Aesthetics Institute Netherlands) was born from a simple yet powerful idea: advanced education in aesthetic medicine deserves a more personal, boutique approach. Founded by Jonathan and Daria – both Global Key Opinion Leaders for Merz Aesthetics – you’ll recognize us from the MAIN stage of leading international conferences. But we’ve always felt there was something missing.
TYPE OF MASTERCLASSES
Hands-on masterclass
DR. JONATHAN KADOUCHWe start with the foundation: detailed, applied anatomy. Understand the ‘why’ behind your techniques, and integrate the latest regenerative principle to future-proof your practice.
International masterclass
INTERNATIONAL FACULTYWe start with the foundation: detailed, applied anatomy. Understand the ‘why’ behind your techniques, and integrate the latest regenerative principle to future-proof your practice.
Aesthetics congress
INTERNATIONAL FACULTYWe start with the foundation: detailed, applied anatomy. Understand the ‘why’ behind your techniques, and integrate the latest regenerative principle to future-proof your practice.
MEET DR. JONATHAN KADOUCH & DRS. DARIA VOROPAI
At THE MAIN, we believe mastery begins with who you learn from. That’s why our faculty is not only global—but exceptional. Each member is a leading authority in their domain, whether it’s advanced anatomy, regenerative aesthetics, injectables, or business strategy.
Also want to meet our International Faculty?
TESTIMONIALS
“I’ve trained all over the world, but nothing compares to the refinement I experienced at MAIN. It wasn’t just about perfecting my techniques—it was about redefining how I think as a practitioner. I returned to my clinic with sharper eyes, steadier hands, and a renewed sense of purpose.”
Dr. Eliza Moreau
Facial Aesthetic Surgeon, Paris
“What sets MAIN apart is the depth. The anatomy sessions alone were worth the trip to Amsterdam. But it’s the philosophy behind the practice that stays with you. You don’t just leave with new tools—you leave with a new mindset.”
Dr. Rafael Jiménez
Dermatologist, Madrid
“MAIN felt more like a private mastermind than a course. The access to international faculty, the hands-on intensity, the intellectual level of discussion—it all pushed me beyond what I thought possible in a single weekend. It raised my entire standard.”
Dr. Lotte van Dijk
Cosmetic Physician KNMG, Amsterdam
Anatomy with Intention
The Philosophy of Facial Harmony
Regenerative Aesthetics: The Future, Now
Complication Mastery: Calm in the Storm
Ready to Redefine Your Standard?
MAIN is not open to everyone—only to those ready to lead, elevate, and think differently. If you’re prepared to move beyond techniques and into true mastery, we invite you to step inside.