1. Lorraine Nordmann & Andrea Day (2022). Professional Beauty Therapy, 4th Edition. Cengage Learning Australia. (ISBN: 9780170446259)

2.  Wagners. S (2020) Aromatherapy: An Essential Oils and Natural Healing Guide for Beginners. Self Publisher. (ISBN: 9788835871040)

3.  G. Francesca (2019). Beauty Therapy Level 2 Kindle Edition. Nelson Thornes. (ASIN : B082WMC28Z)

4.  WebMD, “The Truth About Essential Oils.” YouTube, Jul 21, 2020,

5.  https://tasteforlife.com/conditions-wellness/body-care/aromatherapy-essentials-4-facts-may-surprise-you ;

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7. https://youtube.com/shorts/oUJ_YjSyziI?si=asn-t6KzNjO4geQX

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