Tea tree oil is a proud Australian export worth around $40 million per year to the essential oils and cosmetics industry. Derived from the Melaleuca alternifolia tree, the oil is a natural medicinal product used to treat various skin conditions due to its anti-inflammatory, antibacterial, and antifungal properties.
Australians have grown up with tea tree oil products for generations, and there are no known suitable replacements that fulfil a similar role. It is a unique and valuable natural product.
The total export value may seem modest compared to the mining industry, however, tea tree oil keeps regional Australia alive particularly along the Mid-North coast of New South Wales and into South-East Queensland. As a native plant, it is often grown alongside other crops and is well-suited to the environment.
Certification and quality control of tea tree oil is rigorous, with Australian farmers meeting extremely technical global standards for their export market.
Thirty per cent of this export market sits with the European Union, however, when the EU makes a classification change or decision on the safety of a product, it often has a direct impact on other export markets for a variety of commercial reasons. This can leave Australian farmers in a vulnerable position.
Fresh from signing a new trade agreement, which many have argued is dangerously lop-sided in favour of the EU, the EU seem to be considering a reclassification of tea tree oil that could restrict or ban its use.
It was revealed last week that the EU is close to recommending the reclassification of tea tree oil as a Category 1B reproductive toxin. This could mean a total ban for EU cosmetics unless farmers secure an exemption under the EU Cosmetics Regulation. If the ban were to hold, Australian farmers would have Europe’s door slammed in their faces. Possibly the UK too, as they were part of the early discussions related to this issue. There would be no way to recover. Farms devoted to tea tree production would have to be completely reworked at huge cost or immediately find new international markets.
As a personal aside, we purchased our original family farm back from tea tree owners and we found it difficult to recover the pastures. Yes, it is possible, but it would be ruinous to those families and businesses who have poured their lives, hearts, and investments into the production of tea tree oil. And the timing could not be worse.
The EU’s concern is based on research that tea tree oil might, under quite bizarre circumstances, interfere with fertility. Rats and other animals were force-fed large quantities of tea tree oil in a study intended to explore the product’s usefulness as an agricultural pesticide. The Australian tea tree industry has made clear that the oil is not intended for ingestion.
Whispers of this outcome have been running around for many years when it was reported both the UK and EU were considering reclassifying its alleged toxicity.
‘ECHA opened an ad hoc consultation on the harmonised classification and labelling proposal for melaleuca alternifolia [tea tree oil] in March 2023 and in November 2023, the Risk Assessment Committee (RAC) adopted an opinion that tea tree oil is a category 1B reproductive toxicant, rather than a category 2 classification proposed by Poland. RAC concluded that classifications were warranted in nine hazard classes, with reproductive toxicity being the most stringent.’
And that:
‘All affected brands and products will either need to be removed from the market, or reformulated to remove tea tree oil within 15 months. Household products within the EU are also affected, tea tree oil will be limited to below 0.3 per cent in the final product.’
As reported by Chemistry World:
‘Classification as reprotoxic category 1B (presumed human reproductive toxicant), as proposed by the British Health and Safety Executive (HSE) in August, would result in a default ban in cosmetics and pesticides. The HSE’s conclusion is based on data collected by its EU equivalent, the European Chemicals Agency (Echa), whose risk assessment committee (RAC) adopted an opinion last November to classify tea tree oil as a category 1B reproductive toxicant under the EU classification, labelling, and packaging (CLP) regulation.
‘Both classifications are primarily based on studies that involved force-feeding tea tree oil to rats, rabbits, and dogs. They showed adverse effects on male reproductive systems, including sperm formation, with strong effects in rats.’
The article goes on to note:
‘Industry representatives say the data is inappropriate for evaluating potential human impacts, because the effects shown are species-specific. In the studies, rabbits recovered once dosing was complete; rats and dogs did not.’
And then they further quote the CEO of the Australian Tea Tree Industry Association, ‘Rats are not a good model for human reproductive fertility studies. [They] can’t metabolise terpenes like humans can.’
The CEO of DownUnder Enterprises was quoted by the ABC:
‘The rats were force-fed raw tea tree oil in massive quantities that would never be done because we don’t drink tea tree, and particularly in the quantities that those rats were given.
‘Quite frankly, it’s amazing the rats lived. But in the male rats there were some reproductive issues. So of course the industry has an issue with that because of the way tea tree was administered in the quantity it was administered.
‘Unfortunately, the EU has taken a negative view of tea tree oil. It has taken the view that it is a reproductive toxin.’
Which many feel is an excessively over-cautious decision by the EU, considering tea tree oil has been subjected to decades of observation and investigation without issue.
There is still hope, particularly in a Final Opinion published by the European Commission November 14, 2025. It states:
In light of the data provided and taking under consideration the possible classification as Repr.1B under Regulation (EC) No 1272/2008 (CLP Regulation) and the conditions laid out in Article 15 (2) (d) of the Regulation (EC) No 1223/2009, does the SCCS consider TTO safe when used as an anti-seborrheic and anti-microbial agent in rinse-off and leave-on cosmetic products up to the maximum concentrations provided by the applicant?
The SCCS considers the use of Tea Tree Oil (TTO) as an anti-seborrheic and anti-microbial agent safe in four defended product types.
This raises some uncomfortable questions about the influence of outlier studies on long-standing trade relationships and foreign export markets who have no real right of reply except to hope for counter-studies. The flip side of international trade is that entire local industries can be lost effectively overnight and Australian farmers left without a market that took years to access.
The Australian tea tree industry is looking for human studies to take place, no doubt to back up decades of safe use for a much-loved Australian product. Positive results from these studies could counteract the EU and give Australian farmers some sort of bargaining position. The EU could ignore them. Or the damage to foreign consumers could already be done.
There is another possibility. These extremely popular products, which provide genuine relief to millions of domestic and European customers, could trigger a market retaliation given that there are no suitable alternatives that perform as well as tea tree oil.
Australian farmers are right to be perplexed by the EU. Tea tree oil appeals to what they call the ‘green consumer’, that is the environmentally conscious customer who likes their product to be sustainable, renewable, and natural. It has millions of devoted and happy customers across continents and generations. And it perfectly complies with EU green regulations that seek to expand natural products over petrochemical-derived and other manufactured chemicals.
It would be extremely upsetting to Australia and its agricultural community to lose tea tree oil from the mainstream export market.
