About Lea Jacobson | Using Essential Oils Safely

About Lea Jacobson

Lea’s interest in essential oils began in January of 2013, with a blog post on her previous website Nourishing Treasures: “Learning About Essential Oils – who’s in?”  The interest was overwhelming, and Lea was hooked.

A few days later Lea shares the conclusion of her month-long crash-course researching essential oils, revealing her opinion on the only way to know if a brand of essential oils is worth purchasing in this blog post: “The Ultimate Quality Test”. The response was very positive, and through the generosity of people of the past LAEO Facebook Group, donations were raised to cover the first round of 3rd party GC/MS testing for Myrrh. 

In May 2013 Lea enrolled in Aromahead Institute’s Aromatherapy Certification Program, immersing herself in the fascinating world of essential oil data sheets and GC/MS reports.

Seeing that her interest in essential oils was creating many aromatherapy-related blog posts on her natural health and herb website, Lea decided a separate website (from Nourishing Treasures) was required, and Learning About EOs.com was founded on July 22nd, 2013, but has now been replaced with this website Using Essential Oils Safely, (which you are on right now). The first blog post was the “3rd party testing results for various Tea Tree essential oils”, which generated much global interest.

Lea Jacobson (formerly Lea Harris) graduated from Aromahead Institute’s Aromatherapy Certification Program the following week, on July 30, 2013.


“Using Essential Oils Safely,” Lea’s first e-book on essential oils, was released August 2nd, 2013, and is largely based on the final report she submitted as part of her aromatherapy course. You can get this FREE e-book by subscribing to our newsletter.

Results for our 3rd party testing of Peppermint generated much interest, as out of the 13 bottles, 10 were found Not in Compliance – two of which also contained a synthetic additive, ethyl vanillin.

Lea graduated Aromahead’s Advanced Graduate Program on October 20, 2013.


In September 2013, Lea began writing for Natural Herbal Living magazine.

Also in September 2013, Lea met Robert Tisserand at the AIA pre-conference, where she got one of the first few pre-release copies of Essential Oil Safety.


On December 30, 2013, the Using Essential Oils Safety facebook group was created, gaining 8,000 members in the first two months.

Deepening her studies, Lea completed over 400 hours of education through Aromahead‘s Scholars Program in February of 2014, earning the title of Clinical Aromatherapist.


Wanting to expand her knowledge into herbal studies, Lea enrolled in and graduated as a Certified Herbalist through the Herbal Academy of New England‘s, completing both the Introductory Herbal Course and the Intermediate Herbal Certification Course, graduating April 19, 2014.

On April 30, 2014, Using Essential Oils Safely reached 10,000 members.

On June 6, 2014, Using Essential Oils Safely reached 20,000 members.

On July 23, 2014, Using Essential Oils Safely reached 25,000 members.

On September 2, 2014, Using Essential Oils Safely reached 30,000 members.

On October 6, 2014, Using Essential Oils Safely reached 35,000 members.

On November 14, 2014, Using Essential Oils Safely reached 40,000 members.

On January 19, 2015, Using Essential Oils Safely reached 50,000 members.

On March 18, 2015, Using Essential Oils Safely reached 60,000 members.

On March 30, 2015, Lea began putting this website together, sharing on social media a few days later when she started adding content.

On June 30, 2015, Using Essential Oils Safely reached 70,000 members.

In July, 2015, Facebook decided to delete our group. While I contacted them numerous times about why, I never got a response. There have been other large groups which have also disappeared, leading to the assumption facebook just can't handle large groups. We started a forum, but after many of your requests, we started a new facebook group (which grew to 60,000 members as of October 2016, hit 100,000 May 2017, and as of July 2018 is home to 150,000 members). A month later, our the original group came back!

Lea writes guests posts, magazine articles, provides interviews with natural health and aromatherapy websites, and educates many on using essential oils safely via e-mail, her facebook pages and groups.

Lea works as a consultant for natural health bloggers, reviewing information and recipes before they are published, as well as teleseminars and essential oil profile information for companies which provide essential oils for their customers, such as Lemongrass Spa, Edens Garden, and others.

Using her expertise and experience, Lea has formulated family safe essential oil blends for companies, helped to design labels for them, created profiles and website content for essential oils, and more.

Lea is the author of Using Essential Oils Safely, The TRUTH About Essential Oil Safety, The Hydrosols Quick Start Guide, and Hydrosols Quick Start Guide ebooks, as well as the best-selling Essential Oil Profiles print and ebooks. 

Lea hosted weekly essential oil classes in 2016 free of charge to fulfill her mission to empower the masses on how to use essential oils safely. She has recently started hosting them again here: free essential oil classes.

Seeing a need in the industry for safer labeling, Lea released her first product, safe essential oil labels. These labels allow you to wrap essential oil bottles from any brand you have, allowing you to easily reference safety information without referencing a book or taking a class.

Lea Jacobson also allows access to her personal notebooks via Evernote, using the Evernote app to allow easy access to the Top 60 most popular essential oils. Everything you need to know about essential oils – safety, shelf life, therapeutic properties, benefits, and more – accessible from any device you have. Learn more on UEOSapp.com

UEOS Basics: from Beginner to Confident User released November 30, 2016. The VIP upgrade sold out in two hours! Lea currently offers this course a couple times a year in a small private facebook group.

Lea published her first full color, spiral bound print book, Essential Oil Profiles: Aromatherapy Reference Manual for the Beginner and Beyond, on March 2018, and preorders sold out in three days!

Lea's second course, the Essential Oil Blending Class, was released in September of 2018. Her Essential Oil Student Textbook was published in early 2019, making it her second book published with an ISBN and recognized by the Library of Congress.