Welcome to Purodem®

Natural Skincare Formulation & Aromatherapy Courses

Online training in product formulation — for skincare brand-builders, complementary therapists, and anyone who wants to learn this from the ground up.

"I'm Deana Kassim — aromatherapist, skincare formulator, and educator with over 20 years in the therapy sector. I founded Purodem because I wanted a school that explains why each formulation works the way it does, and where students are properly looked after from start to finish."
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Deana Kassim
Founder & Lead Educator, Purodem

What We Teach

Purodem is, at heart, a school of formulation. Everything taught here comes back to one skill: taking plant-based ingredients and bringing them together into something safe, stable, and genuinely useful.

That skill leads in two directions. Some students are here for cosmetic formulation — learning to create skincare for themselves, for clients, or for a brand they’re building. Others are here for therapeutic work — using essential oils, carrier oils, and plant materials to support a practice in aromatherapy or complementary health. The underlying craft is the same, which is why both live comfortably under one roof.

Whichever direction you’re heading, the teaching is built from the ground up — ingredient by ingredient, principle by principle — so the why always comes alongside the how.

Diploma Courses

Purodem offers two diploma programmes — each one a full course in its own right, and a natural starting point depending on where your interest lies.

Diploma in Natural Skincare Formulation (NSF)

Learn to create skincare that is safe, stable, and effective — and to understand the choices behind every formulation you make.

This is a genuinely beginner-friendly diploma that takes you from first principles through to confident, independent formulation. You’ll work across the core cosmetic systems — emulsions, anhydrous formulations, gels, and surfactant-based products — building real technical skill in ingredient function, formulation structure, good manufacturing practice, and systematic product development.

It suits anyone formulating for themselves, developing a product range, or building a skincare brand on solid ground.

At a glance:

  • 8 structured modules
  • 2 years’ access
  • Suitable for complete beginners
  • Supports personal, professional, and brand-development pathways

Professional Essential Oil Therapy (PEOT)

An advanced diploma in bespoke essential oil blend design, product formulation, and therapeutic application.

PEOT is designed for practitioners who want to take their work with essential oils deeper — into case-based, application-led practice with real therapeutic intent. It develops a working knowledge of essential oils, carrier oils, formulation principles, and therapeutic reasoning, all grounded in professional practice.

At a glance:

  • 6 comprehensive modules
  • Guided and self-directed study hours
  • Equivalent to UK Higher Education Level 5
  • Application-based admission

A New Direction — September 2026

We are putting the finishing touches to something new: a qualification in Integrative Therapeutic Formulation [ITF] — bringing essential oils, vegetable oils, hydrolats, and plant actives together into one connected approach to therapeutic formulation.

It’s designed for therapeutic practitioners who want to deepen their work with plant materials, and for anyone curious about where therapeutic formulation can evolve when given space to grow.

The full Integrative Therapeutic Formulation programme will be shared closer to launch. If you’d like to stay updated, you’re warmly invited to join the list to register your interest.

How Our Courses Work

Every Purodem programme is built around the same idea: that you learn formulation best when the teaching is structured, when there’s someone to ask, and when what you make actually has to work.

In practice, that means:

  • Multi-module learning that builds your understanding step by step
  • Tutor support throughout — feedback, questions, and a real person at the other end
  • Applied, case-based assessment that mirrors how formulation works in practice
  • Safety running through everything — dosage, contraindications, stability, and preservation, taught as part of formulation rather than as a footnote
  • A clear sense of what each course will and won’t equip you to do, so you finish with a realistic view of your own skill.

What Our Students Say

Our students come from all kinds of backgrounds — complementary therapists, nurses and healthcare professionals, skincare formulators, and people who simply wanted to take their interest further.

Posts & Articles

Practical writing on essential oils, natural skincare formulation, and how the two come together — to read alongside your courses, or just because something caught your eye.