Subtil Academy is a set of teaching tools around a single, radical idea: that essential oils are quantum-scale messengers — and that learning to work with their frequencies transforms how we heal, for ourselves and for others.
Subtil is not just another aromatherapy course. It is a doorway into a complete healing system — where you learn to identify the root cause of imbalance in minutes, work across time and space with essential oils, and develop an unshakable therapeutic confidence.
Across modules spanning the visible — physiology, organs, systems — and the invisible — energy fields, emotions, quantum corrections — Subtil gives you the tools to become a truly autonomous healer.
Note: "Diploma course" indicates an in-depth private training program and is not a third-party certification.
This is not a course about aromatherapy theory. It is a daily therapeutic practice that acts on everything fuelling your chronic stress, your constant fatigue — and your slow drift toward burnout — without you having to think about it.
Each essential oil you identify works simultaneously to release the subconscious patterns keeping you stuck, harmonise your heart energy and kidney energy, protect your gut microbiome, and prevent most of the urogenital infections that quietly burden women's lives.
A state of chronic stress — with its cascade of hormonal responses that suppress immunity, disrupt digestion and nutrient absorption, impair cellular regeneration, and reduce detoxification capacity.
A state of inner fullness — calm, openness, joy, and deep wellbeing, with its own hormonal cascade: telomere lengthening, cellular protection and regeneration, immune support, improved nutrient uptake, toxin elimination, and energetic elevation.
What would your life look like if you had your own inner compass close at hand — one that always pointed you toward alignment? AromaSoulTherapy is designed to align your daily life with your inner truth. That alignment is where lasting change happens.
Women's health and spirituality, quantum investigation tools, core AST practices, safe detox protocols.
Physical applications, energy protection, pain management, perimenopause, endometriosis, skin and hormonal health.
Specialised teachings to deepen your healing and expand your personal or professional practice.
The foundation of everything taught inside Subtil Academy. A practical guide to Quantum Aromatherapy — and the gateway to AromaSoulTherapy.
In Breathe Love Heal, Dr. Ellert unveils a transformative healing method: how to use the vibrational frequencies of essential oils to resonate with the highest frequencies of the human soul. A non-invasive, non-toxic, life-saving approach to self-healing — available to anyone.
"Quantum healing therapy using essential oils is the aromatherapy of the future."
A 30-minute call with Cécile is the simplest way to find out which path is right for you — whether that's Subtil, AromaSoulTherapy, or starting with the book.
This first month of Subtil — a start of reconstruction! I feel myself being transformed, gradually, like a fruit that is ripening, a door opening to another world. Thank you for your teaching, and your kindness. Your sparkle is a real balm.
Since the training, I'm no longer searching for the perfect blend for every problem. I've become autonomous. I've also discovered my personal power to heal myself. This formation opened the door to a much more Subtle universe…
Before, I was ultra-sensitive. Now I am ultra-ultra-sensitive — but I can determine which emotions and sensations are truly mine, and which I perceive from others. This is completely new to me.
