The research on synthetic fragrance ingredients and human hormones is ongoing - but the concerns are real, well-documented, and have been known within the industry for decades.
Endocrine Disruptors
The primary concern with synthetic fragrances is endocrine disruption - chemicals that can mimic, block, or interfere with the body's hormonal system. This can happen in three ways: by binding to hormone receptors and triggering responses that shouldn't occur, by blocking natural hormones from functioning correctly, or by altering how hormones are produced, transported, metabolised, and eliminated.
The endocrine system governs reproduction, metabolism, growth, mood, and immunity. Disrupting it - even subtly, over time - is not a trivial concern.
The Chemical Classes of Concern
Phthalates are used as solvents and fixatives to make synthetic scents last longer. Some, particularly diethyl phthalate (DEP), are linked to reproductive health issues and potential hormonal disruption. While certain phthalates have been phased out in some markets, they remain in widespread use globally.
Synthetic musks such as galaxolide and tonalide have been detected in human tissue, breast milk, and the broader environment. Laboratory studies have shown potential for hormonal activity - and unlike most compounds, they bioaccumulate rather than being easily eliminated by the body.
Parabens, while primarily used as preservatives, have weak estrogen-mimicking properties and are commonly found in fragranced personal care products. Their cumulative effect across multiple daily-use products is an ongoing area of research.
Other synthetic compounds - synthetic fragrances can contain hundreds of individual chemicals. The potential hormonal and biological effects of many remain poorly understood, and long-term combination effects are rarely studied.
The Skin Absorption Factor
Fragrance applied to skin is not simply sitting on the surface. The skin absorbs compounds into the bloodstream - bypassing the digestive system and its filtration processes entirely. This makes the ingredient quality of anything applied topically more significant than it might appear for something "just worn on the skin." Wrists, neck, and chest - the most common application points - are areas with high blood flow and thin skin, increasing absorption further.
Industry Awareness - and Inaction
The fragrance industry has not been unaware of these concerns. The International Fragrance Association (IFRA) was established specifically to regulate ingredient safety - yet the same synthetic chemicals linked to endocrine disruption continue to appear in mainstream products at scale. The reason is straightforward: synthetic fragrance compounds are extraordinarily cheap to produce compared to natural alternatives, and the profit margins in mass-market perfumery depend on them.
Major fragrance houses supply ingredients to hundreds of brands simultaneously. The financial incentive to reformulate away from cheap, effective synthetics is low - particularly when ingredient disclosure laws allow everything to be listed simply as "fragrance," with no obligation to name individual compounds. Consumers are left without the information needed to make an informed choice.
It is also worth noting that many products marketed as "fragrance-free" still contain masking fragrances - synthetic compounds used to neutralise unpleasant chemical odours in the base formula. These are not required to be declared as fragrance ingredients. The problem is more pervasive than labels suggest.
Potential Health Impacts
Depending on the chemical, dose, duration, and individual sensitivity, endocrine-disrupting compounds have been associated with: reproductive health issues including menstrual irregularities and changes in sperm quality, thyroid dysfunction, metabolic disruption with links to obesity and insulin resistance, and neurological development concerns - particularly in offspring exposed during pregnancy.
Individual sensitivity varies significantly. Some people are more affected than others, and cumulative daily exposure across multiple fragranced products - shampoo, moisturiser, deodorant, cleaning products, candles - compounds the risk beyond any single product in isolation.
The Transparency Problem
In Australia, companies are not required to disclose individual ingredients under the term "fragrance." A single word on an ingredient list can legally represent dozens or hundreds of synthetic compounds. This makes it effectively impossible for consumers to know what they are being exposed to - or to make genuinely informed decisions about the products they use daily.
Why Natural Perfumes Are Different
Natural perfumes use essential oils, absolutes, and plant-derived isolates. These are complex by nature - plants produce hundreds of compounds - but they are naturally occurring substances the human body has had long evolutionary exposure to, rather than novel synthetic molecules it has not.
It is worth being honest: some natural essential oils contain compounds that have biological activity, and a small number have their own safety considerations at high concentrations. This is why IFRA guidelines exist, and why responsible natural perfumers - including Profound Naturals - formulate within them. The difference is that the risk profile of natural ingredients is far better understood, the ingredients are fully declarable, and the absence of phthalates, synthetic musks, and masking agents removes the primary classes of endocrine-disrupting concern entirely.
For those who want to know exactly what they are putting on their skin - and why - natural is the only category that makes that possible.
No Added Synthetics
Completely Cruelty-Free
Sustainable Packaging
Australian Native