The program I've enrolled in is offered by Essence of Thyme College of Holistic Studies in British Columbia, Canada. It's approved by the National Association for Holistic Aromatherapy and the Alliance of International Aromatherapists. It's a 400+ hour online course of study that includes a comprehensive curriculum, exams, and case studies.
I'm interested in developing my own blends and sharing essential oils with others, but I want to be well-educated so I can do so safely and professionally. That's what encouraged me to take this step and pursue certification. I did some back-to-school shopping for notebooks and folders and just submitted my application. It's going to be challenging, but I am very excited about taking this step toward more professional work with essential oils. :)
Some of the books and supplies that I've been studying with the past few years. I've come quite far already since my first experimentation with oils back in 2016.