Aromatherapy III Online


The Aroma 505 Materia Medica includes the study of the therapeutic uses, active constituents, methods of administration, and cautions and contraindications for each of the oils studied; oils are studied alphabetically.

The focus of the aromatherapy department is holistic aromatology. Holistic aromatology focuses on restoration of physical, mental, emotional, and spiritual health through the application of essential oils. We use the terms “aromatherapy” and “aromatology” interchangeably throughout the program. All healing modalities offered by ACHS focus on the holistic approach. Our philosophy is that only by taking care of the whole person–the physical, emotional, and spiritual–can health and wellness occur.

Learning Outcomes

  • Identify, discuss, and safely use the organic or wildcrafted essential oils studied, including: Botanical information, identification, sources, historical uses, parts used, cultivation, harvesting, production, characteristics, active constituents, therapeutic actions, medicinal uses, evidence-based uses, household uses, and perfumery

  • Create lifestyle plans and aromatherapy programs to support optimal health

  • Identify, describe, and discuss appropriate and safe uses of a full range of administrative methods for the oils studied

  • Synthesize the aspects of the body of aromatherapy research

  • Build on skills gained in earlier aromatherapy courses, and continue to learn to interpret and evaluate aromatherapy research

  • Discuss the concepts in evaluating the validity of aromatherapy research

  • Demonstrate the ability to critically review aromatherapy research

  • Explain the hierarchy of research (case study, a case series, pilot study, and trials)

  • Understand the importance of and perform aromatherapy research in order to maintain a practice of independent study to maintain and further develop expertise in the clinical uses of essential oils

  • Understand the critical process and evaluate it with a critical eye and identify ways to perform your own research study

  • Understand the importance of and perform aromatherapy research in order to maintain a practice of independent study to maintain and further develop expertise in the clinical uses of essential oils

  • Demonstrate the ability to write a case study and/or report on aromatherapy

More details

Required Course Pack:

  • ACHS eTextbook: Petersen, D. (2020). AROMA 505: Aromatherapy Materia Medica: Essential Oil Monographs (20th Edition). Portland, OR: American College of Healthcare Sciences. (Optional: Printed copy available for an additional fee)
  • Online Materials and Library Resources (OMLR)
  • AROMA Case Study Companion Kit III

The AROMA Case Study Companion Kit III includes the following experiential learning supplies: 

  • 1 oz Amber bottles (Qty 4)
  • 10 ml Roll-on bottles (Qty 3)
  • 16 oz Sweet Almond Oil (may contain multiple bottles to total 16oz)
  • 4 oz Sweet Almond Oil 
  • 2 oz Anhydrous Lanolin
  • 2 oz Organic Argan Oil
  • 4 oz Beeswax Pearls
  • 2 oz Apricot Kernel Oil
  • 2 oz Citric Acid, Non-GMO
  • 4 oz Organic Cocoa Butter
  • 2 oz Organic Corn Meal
  • 2 oz Corn Starch, Non-GMO
  • 4 oz Baking Soda
  • 4 oz Epsom Salts
  • 1/2 oz White clay
  • 2 oz Mineral Bath Salts (Coarse)
  • 2 oz Mineral Bath Salts (Fine)
  • 2 oz Lavender Hydrosol in cobalt spray bottle
  • 2 oz Lavandin Hydrosol in cobalt spray bottle
  • 5 ml Amber glass bottles (Qty 6)
  • 2 oz amber bottle with cap
  • 2 oz Cobalt spray bottle (Qty 2)
  • 8 oz Cobalt jar
  • 4 oz round tin with container
  • 25 ml glass beaker
  • Glass stirring rod
  • Disposable 3 ml pipettes (Qty 6)
  • 4 oz Round stainless steel tin
  • Nasal Inhalers (Qty 3)
  • Aromatherapy Diffuser
  • Perfume Test Strips
  • Jasmine Perfume Oil
  • Rose Perfume Oil

This practical lab kit contains the following certified organic or sustainably wildcrafted essential oils:

  • Buddha Wood Eremophila mitchellii
  • Immortelle Helichrysum italicum ct. neryl acetate
  • Jasmine Absolute Jasminum grandiflorum
  • Juniper Berry Juniperus communis
  • Lavender Lavandula angustifolia
  • Lemon Citrus limonum
  • Marjoram Origanum majorana
  • Neroli Citrus aurantium var. amara
  • Niaouli Melaleuca quinquenervia ct. 1,8-Cineole
  • Nutmeg Myristica fragrans
  • Oregano Origanum vulgare
  • Patchouli Pogostemon cablin
  • Peppermint Mentha xpiperita var. Black Mitcham
  • Pine Pinus sylvestris
  • Rose Attar Rosa damascena
  • Rosemary Rosmarinus officinalis ct. Cineole
  • Sandalwood Santalum album
  • Spearmint Mentha spicata 
  • Spikenard Nardostachys jatamansi 
  • Tea Tree Australia Melaleuca alternifolia ct. Terpinen-4-ol
  • Tea Tree New Zealand Leptospermum scoparium ct. Triketones
  • Thyme Thymus vulgaris
  • Vetiver Vetiveria zizanioides 
  • White Sage Salvia apiana var. typica
  • Yarrow Achillea millefolium
  • Ylang Ylang COMPLETE Cananga odorata var. genuina

Required Textbooks: 

View the required textbooks for this class, including ISBN, edition, and retail price, by visiting our Required Textbooks page.

Total Course Price:

View the total course price, including tuition, fees, course materials, and shipping online here.

None – Prior formal aromatherapy training recommended

Current Instructors:

View all ACHS instructors, including bios, photos, and courses taught.

Admissions Requirements:

Candidates must possess a baccalaureate degree or higher from an institution accredited by an agency recognized by the US Department of Education. Candidates must submit official transcripts directly from the issuing institution along with one professional letter of recommendation. All applicants must be recommended for admission by the ACHS Admissions Committee.

Total Course Price:

View the total course price including tuition, fees, course materials, and shipping.

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