Alternative & Integrative Therapies
Essential oils
applied to skin
Transdermal application of essential oils — how they penetrate the skin and reach the bloodstream, which oils show the strongest activity against Borrelia, and how to apply them in practice.
The idea sounds almost too simple: rub an oil onto your skin and it fights infection. Yet the science behind transdermal absorption of essential oils is well-established, and two Johns Hopkins studies have documented their activity against the most resistant forms of Borrelia — including persisters and biofilm. This page explains how it works and what the evidence actually shows.
Why apply essential oils to the skin?
Essential oils are highly concentrated, volatile compounds extracted from plants. Their molecules are small and lipophilic — meaning they dissolve in fats. This makes them unusually well-suited to crossing the skin barrier, which is itself largely composed of lipid layers.
Transdermal application has several advantages over oral intake. It bypasses the digestive system entirely, avoiding potential irritation of the gut lining and the liver's first-pass metabolism. It allows continuous, gradual absorption into the bloodstream. And it eliminates the risks associated with swallowing concentrated essential oils — which can be genuinely harmful if done without proper guidance.
The Polish herbalist Jan Wojcierowski, who pioneered transdermal essential oil therapy for Lyme disease in Poland and documented hundreds of cases, consistently recommended topical application over internal use — describing it as the safest and most practical form of delivery.
How essential oils penetrate the skin
The skin is not an impermeable wall. It has three main routes through which molecules can pass:
Molecules pass through the tiny spaces between cells in the stratum corneum — the outermost layer of skin. This is the primary pathway for most essential oil constituents, which navigate the lipid-rich spaces between cells.
Molecules pass directly through the corneocytes — the flattened dead cells of the stratum corneum — moving inward through successive layers. Less common but relevant for smaller molecules.
Perhaps the most efficient pathway: molecules bypass the stratum corneum entirely by passing through hair follicles, sweat glands, and sebaceous glands — structures that originate in the dermis and span the full height of the epidermis, offering direct access to deeper tissue and blood vessels.
Once past the epidermis, the molecules reach the dermis — which contains blood vessels, lymphatic vessels, and nerve endings. From here, essential oil constituents enter systemic circulation. Research has confirmed that essential oil compounds are detectable in the bloodstream following topical application.
Areas with thinner epidermal layers and higher concentrations of hair follicles and sebaceous glands — including the wrists, scalp, face, neck, and the soles of the feet — show the highest rates of transdermal absorption. Application to the spine and along major blood vessels enhances systemic distribution further.
Essential oil molecules also act as penetration enhancers — they temporarily disrupt the lipid structure of the stratum corneum, increasing their own absorption and the absorption of other compounds applied at the same time. This self-amplifying quality makes them unusually effective transdermal agents compared to many synthetic compounds.
The Johns Hopkins research — what it found
Between 2017 and 2018, a team led by Dr. Ying Zhang at Johns Hopkins Bloomberg School of Public Health published two studies screening essential oils for activity against Borrelia burgdorferi — specifically targeting the stationary phase and persister forms that standard antibiotics struggle to eliminate.
Feng J, Zhang S, Shi W, et al. Selective Essential Oils from Spice or Culinary Herbs Have High Activity against Stationary Phase and Biofilm Borrelia burgdorferi. Frontiers in Medicine, 2017. The study screened 34 essential oils against stationary phase Borrelia, identifying oregano, cinnamon bark, and clove bud as the most potent — showing activity against persisters even at very low concentrations (0.125%), outperforming daptomycin, then the leading pharmaceutical candidate for persister Borrelia.
Feng J, Shi W, Miklossy J, et al. Identification of Essential Oils with Strong Activity against Stationary Phase Borrelia burgdorferi. Antibiotics, 2018; 7(4):89. A second screen of 35 additional essential oils found 10 that completely eradicated stationary phase Borrelia within 7 days — with no regrowth observed after 21 days. The strongest performers included garlic, allspice, myrrh, spiked ginger lily, and may chang.
What makes these findings particularly significant is the target: stationary phase persisters are the forms most responsible for treatment-resistant chronic Lyme. Conventional antibiotics — doxycycline, amoxicillin, cefuroxime — have limited activity against these forms. The oils that showed the strongest activity in these studies outperformed some of the best pharmaceutical candidates tested.
These were laboratory (in vitro) studies. They demonstrate activity against Borrelia in a dish — not in a living body. Clinical trials in humans have not yet been conducted. The results are promising and scientifically credible, but should be understood as early-stage evidence, not confirmed clinical outcomes.
Which essential oils show the strongest activity
The two Johns Hopkins studies, combined with broader phytotherapy research and patient experience documentation, point to a consistent set of oils. They are grouped here by their documented activity level and primary mechanism.
Strongest anti-persister activity (Johns Hopkins)
Among the most potent in both studies. High carvacrol content — a phenol with documented antimicrobial activity against a wide range of bacteria including Borrelia persisters. Active against biofilm forms.
High cinnamaldehyde content. Strong anti-persister activity in Study 1. Also acts as a skin penetration enhancer — increasing its own absorption and that of other oils applied alongside it.
High eugenol content. Identified in both studies as highly active against stationary phase Borrelia. Also noted for activity against co-infection organisms including parasitic forms.
One of 10 oils that completely eradicated stationary phase Borrelia in Study 2 with no regrowth at 21 days. Organosulfur compounds are the active mechanism. Strong odour limits practical daily use for some.
Complete eradication of Borrelia persisters in Study 2. Resin-derived oil with anti-inflammatory and antimicrobial properties. Used historically in wound treatment and infection management.
Complete eradication in Study 2. High eugenol content similar to clove. Less commonly discussed in Lyme patient communities but scientifically one of the strongest performers.
Active against biofilm and supporting forms
Thymol and carvacrol content. Active against active and biofilm Borrelia forms. Also documented for activity against parasitic larval forms relevant to co-infections.
Identified in Study 2. High geraniol content. Active against persister forms and documented in co-infection contexts (Bartonella, parasitic forms). Gentler on skin than phenol-heavy oils.
Active in Study 1 against stationary phase Borrelia. Citronellal and geraniol content. Milder odour and lower skin irritation potential than oregano or cinnamon — often used in blends.
Identified in Study 1. Very high methyl salicylate content — a natural analogue of aspirin, with anti-inflammatory and antimicrobial properties. Penetrates deeply into tissue.
Supportive and carrier oils
Strong anti-inflammatory. Boswellic acids modulate the immune response and reduce neuroinflammation. Used alongside antimicrobial oils to address the inflammatory component of chronic Lyme.
Mild antimicrobial with strong calming and anti-inflammatory properties. Used in blends as a moderating oil — reducing skin irritation from stronger oils and supporting the nervous system.
The recommended carrier for diluting essential oils before skin application. Caprylic acid content (medium-chain fatty acid) has its own documented anti-fungal and antimicrobial properties. Enhances absorption.
Used in more advanced protocols for Bartonella and biofilm forms. Lymphatic and circulatory support. Skin-friendly — can be applied closer to the face and neck without significant irritation risk.
How to apply — the transdermal protocol
The following describes the approach documented by Jan Wojcierowski and used within the Polish Lyme patient community. It is shared here as information about what people have done — not as a treatment recommendation. Always approach new substances cautiously, begin with low doses, and if you work with a practitioner, involve them in this process.
I used transdermal essential oils as part of my own Lyme protocol. The Herxheimer reactions — the initial worsening before improvement — were among the strongest I experienced with any approach. That, in itself, told me something was happening. Start low. Watch your body carefully.
Before applying any new essential oil, test 1–2 drops diluted in carrier oil on the inner forearm. Wait at least 30 minutes, ideally overnight. If burning, blistering, or significant redness occurs — do not use that oil. Reactions are uncommon (estimated 1–2%) but do happen.
Essential oils must be diluted before skin application — never apply undiluted (neat) oils directly. A typical ratio is 2–5 drops of essential oil per teaspoon of carrier oil (coconut oil is preferred for its own antimicrobial properties). Stronger oils like oregano and cinnamon bark require more dilution — start at 1–2%.
Focus on areas where skin is thin and follicle density is high. Apply across the back and along the spine, the soles of the feet, the backs of the hands, the wrists, and the neck. Some practitioners also recommend the chest and temples — with care around the eyes. Massage gently to distribute and encourage absorption.
Most essential oil molecules are absorbed within 10–15 minutes of application. Absorption rate increases with continued use. If you need to shower or dress before this, apply to the backs of the hands and wait — the hands absorb quickly and you can then go about your day.
The documented protocol involves applying oils 2–3 times per day. In the testing approach described by Wojcierowski, each oil is used for 2 days before moving to the next — allowing the practitioner to observe which oils provoke a Herxheimer response and which do not. The response indicates the presence of pathogens sensitive to that oil.
A Herxheimer reaction — temporary worsening of symptoms as bacteria die and release toxins — is common with effective antimicrobial approaches. It typically appears within minutes to hours of application and may include increased fatigue, joint pain, headache, or flu-like symptoms. If reactions are severe, reduce the dose significantly. If mild to moderate, this is expected and can be managed with detox support.
No single oil covers all Borrelia forms and co-infections. A rotation or blend covering different mechanisms — anti-persister (oregano, clove), anti-biofilm, anti-inflammatory (frankincense), and co-infection support (palmarosa, geranium, thyme) — is more likely to address the full complexity of tick-borne disease. Many practitioners rotate different oil combinations over weeks or months.
Safety considerations
Phenol-rich oils (oregano, thyme, clove, cinnamon bark) are the most potent — and the most irritating. They must always be well-diluted. Never apply near the eyes, mucous membranes, or broken skin. Prolonged use of concentrated phenols can cause skin sensitisation over time. Rotate and rest.
Photosensitising oils — including citrus oils and some spice oils — can cause skin reactions on sun-exposed areas. Apply to covered areas of skin, or in the evening before bed.
Pregnancy and children: many essential oils are contraindicated in pregnancy and for young children. Consult a qualified aromatherapist or herbalist before use in these groups.
Essential oils are powerful concentrated substances. The fact that they are natural does not mean they are without risk. Respect the dose, dilute properly, watch your body's response, and reduce or stop if reactions are disproportionate.
At the same time: when used appropriately, transdermal essential oils have a strong safety record in the Lyme patient community. No serious adverse events have been documented from correctly diluted topical use. They do not carry the gut, liver, and resistance risks associated with prolonged antibiotic use.
What we don't know yet
The Johns Hopkins studies are real, peer-reviewed science — published in credible journals, funded by legitimate Lyme research foundations. They document genuine antimicrobial activity against Borrelia in laboratory conditions.
What they do not confirm is clinical efficacy in humans. The gap between in vitro activity and in vivo treatment outcome is real and significant. Concentrations that work in a petri dish may not be achievable in human tissue. The pharmacokinetics of transdermal absorption — how much of a given oil reaches target tissue at what concentration — has not been formally studied in the context of Lyme disease.
What exists alongside the lab data is a large body of patient experience — documented by practitioners like Wojcierowski and reported across Lyme patient communities — describing consistent Herxheimer reactions, symptom improvement, and in many cases, recovery. This evidence is qualitative and anecdotal. It is also the kind of evidence that has historically preceded formal clinical validation in many areas of medicine.
The honest position: this approach is promising, biologically plausible, supported by preliminary laboratory evidence, and used by a substantial number of Lyme patients with reported benefit. It has not been validated by clinical trial. It should be approached as one part of a broader protocol — not as a standalone cure.
Sources & further reading
- Feng J, Zhang S, Shi W, et al. Selective Essential Oils from Spice or Culinary Herbs Have High Activity against Stationary Phase and Biofilm Borrelia burgdorferi. Frontiers in Medicine, 2017.
- Feng J, Shi W, Miklossy J, et al. Identification of Essential Oils with Strong Activity against Stationary Phase Borrelia burgdorferi. Antibiotics (Basel), 2018; 7(4):89. DOI: 10.3390/antibiotics7040089
- Herman A, Herman AP. Essential oils and their constituents as skin penetration enhancer for transdermal drug delivery. Journal of Pharmacy and Pharmacology, 2015.
- Jiang Q, et al. Development of essential oils as skin permeation enhancers. Pharm Biol, 2017. PMC7011944
- Transdermal Drug Delivery Enhancement by Compounds of Natural Origin. Molecules, 2011. PMC6264261
- Wojcierowski J. — zielarzolejkowy.pl — patient documentation, Herx testing protocols, transdermal case reports (Polish-language resource)
- LymeSci — Might essential oils cure Lyme disease? lymedisease.org/lyme-sci-essential-oils/ (2018)
- Johns Hopkins Hub — Essential oils from garlic, herbs kill persistent Lyme disease bacteria. hub.jhu.edu (December 2018)
Last updated: May 2026
This page covers the transdermal application protocol. For an overview of all essential oils and Lyme disease research, see the Essential oils — overview page →