
Fragrances are a combination of aroma compounds that produce a distinct smell or odour. They are commonly used in cleaning products, cosmetics, and other scented consumer products. While fragrances create a pleasant scent, they are also a mixture of unregulated chemicals that can be detrimental to health. These chemicals are rarely listed on ingredient labels and are considered trade secrets. Exposure to fragrance chemicals can cause a range of health issues, including allergic reactions, respiratory problems, and hormone disruption. With limited regulatory oversight, it is important for consumers to be aware of the potential risks associated with fragrance products.
| Characteristics | Values |
|---|---|
| Definition | A combination of organic compounds that produces a distinct smell or odour |
| Composition | A mixture of aroma compounds having a smell and sufficiently volatile in nature |
| Number of Chemicals | Over 3,000 |
| Types of Chemicals | Natural and synthetic compounds, including benzene derivatives, aldehydes, toluene, and many carcinogenic compounds |
| Health Concerns | Allergic reactions, hormone disruption, lowered fertility, cancers, eye and skin irritation, breathing problems, migraines, and respiratory difficulties |
| Regulation | Not required to be listed on product labels and considered trade secrets; regulated by the Food and Drug Administration (FDA) if present in cosmetics or drugs, and by the Consumer Products Safety Commission if present in consumer products |
| Safety Assessments | Conducted by independent expert panels but not entirely transparent and reliant on manufacturer data |
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What You'll Learn
- Fragrances are a mixture of natural and synthetic chemicals
- They are used in many products, including cosmetics and toiletries
- The FDA regulates fragrance ingredients in cosmetic products
- Fragrances are created by experts in the fragrance industry, known as perfumers
- Fragrances can cause allergic reactions in some people

Fragrances are a mixture of natural and synthetic chemicals
The term "fragrance" can encapsulate a large number of undisclosed components. According to the Environmental Working Group, there are, on average, 14 chemicals in a fragrance product that are not listed on the label. These undisclosed chemicals are unregulated and can be detrimental to our health. Fragrance products often include sensitizing chemicals that can trigger allergic reactions and other components known as hormone disruptors, which can result in lowered fertility, cancers, and other diseases.
Fragrances are made up of a mix of more than 3,500 chemicals, including natural essential oils and synthetic aromatic compounds. These chemicals are combined to create a unique smell for personal care, cleaning, and other products. Fragrance chemicals are not required to go through FDA review before being put into use, and manufacturers are not required to list fragrance ingredients on the product label.
Natural fragrances are derived from essential oils, which are complex mixtures of hydrocarbons, ethers, alcohols, esters, and ketones. Examples of essential oils used in fragrances include lemon, eucalyptus, peppermint, geranium, and rosewood. Synthetic fragrances, on the other hand, are primarily derived from petroleum and include benzene derivatives, aldehydes, toluene, and many carcinogenic compounds. While synthetic fragrances are more commonly used today due to their low cost and abundance, they are of great concern as they contribute to decreasing indoor air quality and increasing personal exposure to potentially harmful chemicals.
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They are used in many products, including cosmetics and toiletries
Fragrances are a combination of chemicals that give each perfume or cologne (including those used in other products) its distinct scent. Fragrance ingredients may be derived from petroleum or natural raw materials. They are used in many products, including cosmetics and toiletries.
Fragrance ingredients are commonly used in cosmetics and toiletries, such as shampoos, shower gels, shaving creams, and body lotions. Even some products labelled "unscented" may contain fragrance ingredients. This is because the manufacturer may add just enough fragrance to mask the unpleasant smell of other ingredients without giving the product a noticeable scent.
The chemicals in fragrance mixtures are not required to go through FDA review before being put into use. Instead, the standards for fragrance are set by an industry trade group, such as the International Fragrance Association (IFRA) and the Research Institute for Fragrance Materials (RIFM). These organisations develop and set voluntary standards for chemicals in the "fragrance" component of products.
The word "fragrance" or "parfum" on a product label represents an undisclosed mixture of various scent chemicals and ingredients used as fragrance dispersants. Fragrance mixes have been associated with allergies, dermatitis, respiratory distress, and potential effects on the reproductive system.
Some fragrance materials can cause sensitization, allergies, respiratory diseases, and irritation, and can contain carcinogens, endocrine disrupters, neurotoxic chemicals, and environmental toxicants. For example, diethyl phthalate (DEP) is a dangerous irritant to the eyes, skin, and respiratory tract, and it can also affect the endocrine and nervous systems.
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The FDA regulates fragrance ingredients in cosmetic products
While fragrance ingredients in cosmetics are not required to undergo FDA approval before they go on the market, the FDA does regulate them under the Federal Food, Drug, and Cosmetic Act (FD&C Act) and the Fair Packaging and Labeling Act (FPLA). The FD&C Act prohibits the marketing of adulterated or misbranded cosmetics in interstate commerce, and the FPLA requires cosmetics companies to list ingredients on labels, but exempts fragrance ingredients. This means that companies can simply list "fragrance" or "flavor" on their ingredient lists without disclosing the individual chemicals within these mixtures.
The FDA does not have the same legal authority to require allergen labeling for cosmetics as it does for food. However, companies and individuals who manufacture or market cosmetics are legally responsible for ensuring that their products are safe and properly labeled. Fragrance formulas are complex mixtures of many different natural and synthetic chemical ingredients, and they are the cosmetic components that are most likely to be "trade secrets."
In addition to the FDA's oversight, the International Fragrance Association (IFRA) coordinates an independent expert panel of dermatologists, toxicologists, and environmental scientists called REXPAN, which is responsible for conducting safety assessments of fragrance ingredients. However, compliance with the IFRA standards on prohibited and restricted fragrance chemicals is voluntary for manufacturers, and there is little to no enforcement of these standards internationally.
While the FDA does regulate fragrance ingredients in cosmetic products, it is important to note that there are gaps in the regulation, and consumers should be aware of the potential risks associated with exposure to fragrance chemicals.
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Fragrances are created by experts in the fragrance industry, known as perfumers
Fragrances are a mixture of various unregulated chemicals, often possessing strong-smelling organic compounds that have characteristic, pleasant odors. While some of these scents are natural, most are a result of a combination of synthetic chemicals, sometimes hundreds of them. These chemicals are rarely listed on the ingredients label and are instead simply grouped under the words "fragrance", "perfume", "parfum", or "aroma".
The job of a perfumer is similar to that of a flavourist, who composes smells and flavourants for commercial food products. Many perfumers develop their own shorthand and signature style, and they usually work for large fragrance houses, where they are restricted to using materials from their own catalogue. Perfumers typically begin a project with a brief from their employer or a customer, which will describe in poetic or abstract terms what the perfume should smell like and the feelings it should evoke, along with a maximum price per litre of the perfume oil concentrate. The perfumer will then blend multiple mixtures, attempting to capture the desired feelings specified in the brief.
Perfumers may come from a variety of backgrounds, including those who have worked their way up from lab assistants, compounders, or evaluators, or those who have entered the industry with a degree in chemistry. Some perfumers are self-taught or have learned their craft as apprentices under another perfumer.
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Fragrances can cause allergic reactions in some people
Fragrances are a mixture of various unregulated chemicals, with more than 3,100 chemicals known to be used in fragrance products. The term "fragrance" can encapsulate a large number of undisclosed components, and companies are not required to list fragrance ingredients on product labels.
A fragrance allergy can manifest as a skin allergy, with symptoms including redness, swelling, and vesicles commonly described as a "skin rash". These rashes most commonly occur on the skin of the face, hands, or armpits. In rare cases, a person can develop anaphylaxis, a severe allergic reaction that can be dangerous. Respiratory symptoms can also occur, such as allergic contact dermatitis, which can lead to an infection if the affected area is repeatedly scratched, creating an environment for bacteria to grow.
To cause a skin allergy, a certain minimum amount of the fragrance substance must penetrate the skin and attach to a skin protein. Once an allergy has developed, it is typically a lifelong condition. Fragrance substances can be derived from natural sources or chemical synthesis, and it is difficult to avoid exposure as even products labelled as "fragrance-free" have been shown to contain fragrance ingredients.
To identify a fragrance allergy, a patch test is typically used, and an allergy action plan can be created to outline the steps to be taken in case of an allergic reaction.
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Frequently asked questions
A fragrance is a mixture of aroma compounds that produce a distinct smell or odour. Fragrances can be natural or synthetic compounds.
Fragrances are made from a combination of organic compounds, essential oils, fixatives, and solvents. The organic compounds include natural and synthetic compounds, with over 5,000 different fragrance chemicals in countless combinations used in personal care products.
Fragrances are not properly regulated. The chemicals in fragrance mixtures are not required to go through FDA review before being put into use. The Federal Fair Packaging and Labeling Act of 1973 requires cosmetics companies to list ingredients on labels but exempts fragrances. Manufacturers often claim fragrance ingredients as a trade secret. Compliance with the IFRA standards on prohibited and restricted fragrance chemicals is also voluntary for manufacturers.
Yes, fragrances can be harmful to both health and the environment. Fragrances can cause contact allergic dermatitis in sensitized individuals, with one-third of the general population experiencing at least one adverse health effect from fragranced products. Fragrances can also cause respiratory problems, migraines, and asthma flares. Additionally, some fragrance chemicals are linked to cancer and can cause hormone disruption, leading to lowered fertility and other diseases.











































