Phthalates in Fragrance, Explained
If you spend any time reading about fragrance, skincare or “clean beauty”, you’ll eventually run into the word phthalates — usually with a warning attached. It’s one of those ingredients that has picked up a frightening reputation without much explanation of what it actually is, or why it’s there in the first place.
The honest answer is more nuanced than “phthalates are bad”. Phthalates are a family of chemicals, not a single substance, and the differences between them matter enormously. Some have genuinely earned their poor reputation. Others — including the one most commonly found in fragrance — have been assessed by regulators around the world and judged safe for the way they’re used. This article walks through the difference in plain language, so you can make an informed choice rather than a fearful one.
What is a phthalate, anyway?
Phthalates are a group of chemicals first developed last century, mostly as plasticisers — additives that make plastics softer and more flexible. They turn up in a huge range of everyday products: vinyl flooring, food packaging, medical tubing, toys, adhesives, and yes, some personal care products.
The key thing to understand is that “phthalate” describes a chemical structure, not a single ingredient. Within that family there are many individual phthalates, and they behave very differently in the body. Lumping them all together is a bit like treating every mushroom as poisonous because some are — the category tells you almost nothing about the risk of any particular member.
Why phthalates got their reputation
The concern that put phthalates in the headlines is real, but it’s about specific phthalates — chiefly the larger, heavier ones such as DEHP (di-2-ethylhexyl phthalate), DBP (dibutyl phthalate) and BBP (benzyl butyl phthalate).
These were historically used as plasticisers in things like soft plastics and, in the case of DBP, older nail polish formulas. The worry is that some of them can act as endocrine disruptors — meaning they may interfere with the body’s hormone system — and animal studies have linked compounds like DBP to effects on reproductive development.
Because of this, these phthalates are now banned or tightly restricted in cosmetics in major markets. In the European Union, several are on the list of substances prohibited in cosmetic products. When people talk about “avoiding phthalates” for health reasons, these are the chemicals the concern is genuinely about.
Where DEP fits in — and why it’s different
The phthalate you’re most likely to encounter in fragrance is a different animal: DEP, or diethyl phthalate. It’s a smaller, lighter molecule than the ones above, and it does a completely different job.
In fragrance, DEP is used as a solvent, carrier and fixative. It helps blend the aromatic materials together, carries the scent evenly, and slows down how quickly the lighter notes evaporate — which is a big part of why a fragrance lasts on the skin or in a product rather than disappearing within minutes. It’s also used as a denaturant (a way of making alcohol undrinkable) across many industries. It has very little smell of its own, which is exactly why it’s so useful in perfumery.
Crucially, DEP does not share the hormone-related effects that gave the heavier phthalates their reputation. This isn’t wishful thinking on the part of fragrance makers — it’s the consistent conclusion of the independent bodies that assess cosmetic ingredient safety:
- The European Commission’s Scientific Committee on Consumer Safety (SCCS) maintains that diethyl phthalate is safe for use in cosmetic products at current levels — and notably, DEP is not on the EU’s prohibited list, unlike its heavier cousins.
- The US Food and Drug Administration (FDA) has stated that, based on the available safety information, it does not have safety concerns about DEP as it is currently used in cosmetics and fragrances.
- The Cosmetic Ingredient Review (CIR) expert panel in the United States reviewed the literature on DEP and concluded it is safe for use in cosmetic products under current conditions and concentrations.
In other words, DEP is the one phthalate that the major regulators have looked at carefully and cleared — while restricting the others. It’s the difference that gets lost when everything is bundled under a single scary word.
What this means in New Zealand
New Zealand regulates cosmetic ingredients through the Environmental Protection Authority’s Cosmetic Products Group Standard, and recent updates have been bringing our rules into closer alignment with the European Union’s cosmetic regulations. Since the EU permits DEP while restricting the phthalates of concern, the same logic applies here: DEP is a permitted, assessed ingredient, while the problematic phthalates are the ones being kept out.
It’s also worth remembering how fragrance is actually used. A fragrance oil is a concentrate. By the time it goes into a finished soap, perfume or lotion, it’s added at a small percentage, and any DEP within it is diluted down again to a very small fraction of the final product. The exposure people sometimes imagine — bathing in neat phthalate — simply isn’t how it works.
If you’d still prefer to avoid all phthalates
None of this is meant to talk anyone out of a personal preference. Plenty of people choose to avoid all phthalates as a matter of principle — preferring to err on the side of caution, or simply wanting the shortest, most natural ingredient list they can find. That’s a completely legitimate choice, and we respect it.
What we believe in is giving you the information to make that choice for yourself, rather than making it for you behind a closed door. The thing the clean-beauty world rightly objects to is the secrecy — the way “fragrance” on a label can hide a long list of undisclosed ingredients. We’d rather do the opposite.
That’s why every fragrance on our site clearly states whether it’s phthalate-free. Look under the Fragrance Profile tab on any product page and you’ll find a simple Phthalate Free: Yes / No indicator, alongside details like flashpoint and vanillin content. So if avoiding phthalates is something you’ve decided matters to you, you can see at a glance which of our fragrances fit — without having to dig through a data sheet to find out.
Our approach: full transparency
For every fragrance we supply, we provide:
- a clear phthalate-free indicator on the product page, so you know straight away where each fragrance stands,
- a Safety Data Sheet (SDS) setting out what the fragrance contains and how to handle it,
- an IFRA certificate giving the maximum safe usage rate for each product type, so your finished products stay well within recognised safety limits, and
- an allergen declaration to support your own labelling.
That means whether you’re a maker formulating a product to sell, or simply someone who likes to know exactly what’s going on your skin, you have everything you need to decide what’s right for you. If avoiding phthalates altogether matters to you, our documentation lets you identify which fragrances suit — no guesswork, and nothing hidden.
Fragrance shouldn’t be a black box. Our job is to make sure it isn’t.
This article is general information, not health or regulatory advice. If you’re formulating products for sale, always check the current requirements that apply to your finished product and use the documentation we provide to support your own compliance.
