Purodem® Journal

Therapeutic Formulation

Working with plant materials as a discipline in its own right, where the materials are understood together and chosen for what a particular person actually needs. From the therapeutic use of essential oils through to formulating for the individual.

Essential oils in one place, carrier and vegetable oils in another, hydrolats and plant actives somewhere else again: plant materials have long been studied one tradition at a time. Therapeutic formulation is the craft of bringing them together, understanding how they behave alongside one another, and putting them to work for what a particular person actually needs.

This section gathers the thinking behind that craft, from the therapeutic use of individual essential oils through to formulating for a specific person and purpose. Some articles are an accessible way in; others go deeper into method and materials.

Start with What Is Integrative Therapeutic Formulation? for the foundations, then explore the articles below.

Integrative Therapeutic Formulation, developed by Purodem’s Deana Kassim, is the discipline that gives this way of working its structure, and the qualification that teaches it.

Learn About Therapeutic Formulation

Therapeutic Formulation
Deana Kassim

The History of Aromatherapy

Aromatherapy, an ancient practice transcending time and cultures, continues to captivate and intrigue us with its captivating scents and therapeutic

Read More »

Ready To Learn More?

Everything here feeds what we teach. If you want to move from reading to formulating, our courses take you from first principles to your own finished work.

Read about ITF — Coming September 2026, a new qualification in therapeutic formulation.

View the NSF Diploma — beginner-friendly, the route into cosmetic formulation.

View the PEOT Diploma — advanced, for practitioners taking essential oil work deeper.