Aromatherapy I Online


Course Description

Aroma 203 takes students to the next step in their aromatherapy training, looking deeper at the historical uses of aromatherapy and the modern scientific research being carried out in this fascinating modality. Students study methods of administration for essential oils in more depth than Aroma 101 and the anatomy and physiology of the related body systems.

Learning Outcomes

  • Describe and discuss aromatherapy, including its historical basis

  • Locate, review, and discuss current research using provided online full-text reference materials and databases

  • Define valid research

  • Demonstrate ways to locate currently developing essential oil and applied research

  • Demonstrate an understanding of the basic principles of a research study

  • Apply research methodology and terminology

  • Have a basic ability of how to read a research paper

  • Identify the components of a research paper and the process involved

  • Identify and discuss the anatomy and physiology of the olfactory, skin, and muscular systems, and the influence of aromatic molecules on each

  • Assess essential oil quality and be able to describe the primary production methods of essential oils

  • Discuss how essential oils interact on physical and emotional levels

  • Understand the chemistry of essential oils and the physiological effect and pathway of individual chemical components

  • Compose aromatherapy blends for therapeutic purposes, perfumery, cosmetics, and soap making

  • Use a full range of methods of administration; one module is devoted to massage

  • Locate clinical scientific studies examining the use of essential oils


More details

Required Course Pack:

  • ACHS eTextbook: Petersen, D. (2021). AROMA 203: Aromatherapy I (19th Edition). Portland, OR: American College of Healthcare Sciences. (Optional: Printed copy available for an additional fee)
  • AROMA 203 Practical Lab Kit – This kit includes the following supplies:
    • 2 oz Aloe Vera Oil
    • 2 oz Apricot Kernel
    • 2 oz Camellia Oil
    • 2 oz Wheat Germ
    • A total of 24 oz of Sweet Almond Oil. *Your kit may contain different size bottles to get to 24 total ounces of sweet almond oil.*
    • 4 oz Baking Soda
    • 4 oz Epsom Salts
    • 2 oz Citric Acid
    • 2 oz Corn Starch
    • 2 oz Mineral Bath Salts – Coarse
    • 2 oz Mineral Bath Salts – Fine
    • 1/2oz White Clay
    • Nasal Inhalers (Qty 3)
    • 10 ml roll-on bottles (Qty 3)
    • 2 oz Cobalt Bottles w/ spray tops (Qty 2)
    • 1 oz Amber Bottle w/Dropper Top (Qty 3)
    • Glass Jar 8oz (Qty 2)
    • 5 ml Amber Bottles (Qty 5)
    • Perfume Testing Strip Booklet
    • Calendula Flowers 1 oz Organic Calendula Officinalis
    • St. John’s Wort Herb 1 oz Organic Hypericum perforatum
  • The following 5 ml Essential Oils:
    • Bergamot Citrus aurantium var. Bergamia
    • Eucalyptus Glob Eucalyptus globulus
    • Ginger Zingiber officinale
    • Juniper Berry Juniperus communis
    • Lavender Lavandula angustifolia
    • Lemon Citrus limonum
    • Cardamom Elettaria cardamomum
    • Marjoram Origanum majorana
    • Rosemary Rosmarinus officinalis ct. Cineole
    • Tea Tea Australia Melaleuca alternifolia
    • Ylang Ylang Cananga odorata var. Genuina
    • Sweet Orange Citrus sinensis
    • Peppermint Mentha x piperita var. Black Mitcham
    • Chamomile Roman Chamaemelum nobile 
  • The following 2 ml Essentials
    • Neroli Boswellia carterii ct. α-pinene
    • Frankincense Citrus aurantium var. amara

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.

Last updated 3/2/23

Embrace your tomorrow.
Request information today.

We are committed to protecting your privacy.  For more information view our Privacy Policy.

Current Instructors:

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

Admissions Requirements:

Minimum of a high school diploma or equivalency and recommendation for admission by the ACHS Admissions Committee.

Total Course Price:

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

Industry Leaders

ACHS Partnerships & Affiliations

logo deac
logo mulondon certifications
logo b corp
logo OBM 100 best green logo