Welcome to Essence of Thyme College of Holistic Studies

What is Aromatherapy?

Aromatherapy can be described as the art and science of utilizing naturally extracted aromatic essences from plants to balance, harmonize and promote health of the body, mind and spirit.

Like herbalism, Aromatherapy draws on the healing powers of the plant world. However, instead of using the whole plant, it employs only its essential oil. This potent, aromatic substance is housed in the tiny glands on the outside or deep inside the roots, woods, leaves, fruits or flowers of the plant. The more oil glands or ducts present in the plant, the higher the yield and thus the less expensive the essential oil.

Essential oils and aromatic extracts are volatile, non-oily aromatic liquids occurring naturally in various parts of plants, herbs, flowers, fruits, woods and spices. They have the ability to strengthen our immune system and to stimulate our bodies’ natural healing abilities. Essential oils and aromatic extracts are highly complex substances made up of many different chemical constituents, and it is the design and number of constituents in an essential oil that make it impossible to reproduce synthetically.

The term “Aromatherapy” can be misleading as it suggests that it is a form of healing that works exclusively through the sense of smell. This is not the case, as each essential oil has an individual combination of constituents that interact with the body’s chemistry in a direct manner.

Essence of Thyme

Essence of Thyme Referral Program

The Referral Program is designed to compensate existing Essence of Thyme students who recommend the course to others.  A 7% commission will be paid to a student who recommends the Full Certification Program to someone who subsequently enrolls in the Full Certification Program.  The compensation, which totals $69.65 can be applied to an exam fee or be paid by way of a cheque.

Course Recognition

Essence of Thyme College of Holistic Studies was credentialed with the NHPCA effective November 14, 2018.

Some of Our Fabulous Students


I'm Carlos Andres Vallejo h... essentials oils distiller and blender since 2007; I work with Aliksir Inc in Quebec Canada using and developing new essentials oils and hydrosol solutions, I seriously appreciate the lab aroma  blending set up, is amazing how every component is approach by and calculated so quickly.

I'm a biologist, nature lover but I love the new technological advances, everything can be better if we work together.


Last year in January I saw an ad in Facebook: Professional Aromatherapy Course. I perked right up, I've always liked using essential oils but I definitely didn't use them properly. I purchased the course around May of 2017 and that determined my life and what direction it was going to go. Colleen created this course that was intensive and challenging. She provides so much with this course including access to Lab Aroma - a database that is highly beneficial that allows you to learn about chemical constituents and their effects on our bodies - mentally and physically. I would highly recommend this course and to purchase Lab Aroma to anyone who would ask me. Its so worth it - it'll be the best decision you've ever made. Thank you Colleen and the rest of the Essence team.


Why should I take the Essence of Thyme Aromatherapy Certification Course?

Colleen has been involved in aromatherapy since 1995 and received her certification in 1998, as well as her Adult Education Diploma Program in 1997.  Her expertise in these areas is reflected in the course material which takes into consideration the various learning styles, the ease in which to navigate the manuals, the depth and clarity of information, and the user-friendly designed full-colour manuals.  Colleen has also owned several successful wholesale and retail aromatherapy businesses and brings this experience along with her background as a business owner, master formulator, spa practitioner, and instructor to the course material and to her students.

Course Recognition:

The Essence of Thyme College of Holistic Studies is the only course available that is recognized by:

  • British Columbia Alliance of Aromatherapy – Registered Aromatherapist®; RA®; Essential Oil Therapist®: EOT®
  • The Canadian Federation of Aromatherapists – Certified Aromatherapy Health Professional®; CAHP®
  • The Alliance of International Aromatherapists – Advanced Aromatherapy Practitioner (formerly Clinical Aromatherapist).
  • The National Association for Holistic Aromatherapy – Professional Aromatherapist
  • Approved for Continuing Education Units (CEU's) with the Massage Therapy Association of Manitoba Inc.
  • Approved for 6 Continuing Education Credits (CEC's) by the Remedial Massage Therapists Association.