
Fragrance is a combination of chemicals that gives each perfume or cologne its unique scent. Fragrance oils are created through the combination of various molecules to create unique olfactory experiences. The fragrance industry is largely self-regulating, with the International Fragrance Association (IFRA) and the Research Institute for Fragrance Materials (RIFM) developing and setting voluntary standards for chemicals in the fragrance component of products. Fragrance chemicals can cause a range of health problems, including endocrine disruption, respiratory issues, and allergic reactions.
| Characteristics | Values |
|---|---|
| Definition | A fragrance is a combination of chemicals that gives each perfume or cologne its unique scent |
| Composition | Fragrance can be made up of a mix of any of more than 3,500 chemicals |
| Health Impact | Fragrance chemicals can cause a range of health problems including allergies, respiratory diseases, irritation, endocrine disruption, and cancer |
| Toxicity | Some fragrance chemicals are toxic and can cause environmental harm |
| Regulation | Fragrance manufacturers are not required to list individual ingredients, but some allergens must be disclosed under a new federal law |
| Standard-Setting | The International Fragrance Association (IFRA) and the Research Institute for Fragrance Materials (RIFM) develop voluntary standards for fragrance chemicals |
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What You'll Learn

Fragrance is a combination of chemicals
According to the International Fragrance Association, there are more than 3,500 fragrance chemicals in use today. In 2010, the association published a list of 3,059 chemicals used in 2011 based on a voluntary survey of its members, identifying about 90% of the world's production volume of fragrances. These chemicals are usually made from petroleum or botanical raw materials.
Many fragrance materials can cause sensitization and allergies, respiratory diseases, and irritation, and can contain carcinogens, endocrine disruptors, neurotoxic chemicals, and environmental toxicants. For example, exposure to acetaldehyde can affect a person's kidney, reproductive system, nervous system, and respiratory system. It is listed as a cancer-causing agent in California's Proposition 65. Benzyl Salicylate is another fragrance chemical that is a known allergen and potential endocrine disruptor.
In addition to health concerns, fragrance chemicals can also be harmful to the environment. Chemical vapors in fragrance, called volatile organic compounds, can cause ozone pollution and form fine particulates.
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Fragrance chemicals can cause health issues
Fragrances are made up of a combination of chemicals that give each perfume or cologne its unique scent. The International Fragrance Association (IFRA) states that there are over 3,500 fragrance chemicals in use today. These chemicals are often not disclosed to consumers, who instead see the word "fragrance" or "parfum" on a product's ingredient list.
Fragrance chemicals can cause a range of health issues, including:
- Allergic reactions: Fragrances are known allergens and can cause a range of allergic reactions, from immediate contact reactions (such as contact urticaria) to respiratory disorders and asthma.
- Hormone disruption: Fragrance chemicals can act like hormones in the human body, leading to a range of health problems, including cancer, birth defects, and reproductive issues.
- Carcinogenic effects: Certain chemicals found in fragrances, such as styrene and acetaldehyde, have been linked to cancer.
- Neurotoxicity: Fragrance chemicals can also act as neurotoxins, impacting the nervous system.
- Environmental concerns: The chemical vapors in fragrances, known as volatile organic compounds (VOCs), contribute to ozone pollution and the formation of fine particulates, which can have respiratory and cardiovascular effects.
The health risks associated with fragrance chemicals are not limited to synthetic fragrances; so-called "natural fragrances" can also be toxic. The lack of standard criteria for the term "natural fragrance" means that these products can be just as unsafe as those with synthetic fragrances.
To avoid potential health issues, consumers should be cautious when purchasing fragranced products. Reading labels and avoiding products that list only "fragrance" or "parfum" as ingredients is essential. Consulting resources like Skin Deep, which provides ratings for products and ingredients, can also help identify potentially harmful chemicals.
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Fragrance ingredients are often undisclosed
Fragrances are a combination of chemicals that give each perfume or cologne its unique scent. They are made from petroleum or botanical raw materials. Fragrance chemicals are not benign, and exposure to them can lead to a range of health problems. They can disrupt the hormone system, harm the reproductive system, and cause allergic reactions in both children and adults.
Despite the potential health risks, fragrance ingredients are often undisclosed. Manufacturers are not required to list fragrance ingredients on product labels. This means that consumers are often kept in the dark about the specific chemicals used in fragranced products. The lack of transparency makes it challenging for consumers to make informed decisions about their health and well-being.
There are a few reasons why fragrance ingredients are sometimes kept confidential. One reason is that companies consider fragrance formulas to be proprietary information and trade secrets. They argue that disclosing ingredients would compromise their intellectual property and give competitors an advantage. Additionally, manufacturers may want to avoid potential lawsuits that could arise from disclosing certain ingredients that may cause allergies or other adverse reactions in some individuals.
Another factor contributing to the nondisclosure of fragrance ingredients is the regulatory landscape. In the US, for example, fragrance and flavor ingredients can be listed simply as "Fragrance" or "Flavor" on product labels, without specifying the individual chemicals used. This is due to an exemption under the Fair Packaging and Labeling Act (FPLA). The International Fragrance Association (IFRA), the worldwide agency responsible for maintaining safety standards for fragrance chemicals, also plays a role in the lack of transparency. While IFRA does conduct research on fragrance safety, it is primarily funded by major fragrance manufacturers, raising concerns about potential conflicts of interest and bias in their findings. IFRA has also been criticized for lobbying to keep the chemical makeup of fragrances confidential and seeking intellectual property (IP) protection for fragrance formulas.
The nondisclosure of fragrance ingredients has sparked concerns among consumers and advocacy groups. Some organizations, like Better Goods, actively discourage the use of products with undisclosed synthetic fragrances due to the potential health risks associated with certain chemicals. Additionally, consumers are increasingly demanding more transparency from manufacturers, calling for detailed ingredient lists to make informed purchasing decisions.
While the full disclosure of fragrance ingredients remains an ongoing issue, there have been some recent developments toward greater transparency. For instance, the IFRA recently published an alphabetical list of ingredients used by its members, albeit without disclosing specific formulas or product details. Additionally, a new federal law passed in December 2022 will require the disclosure of certain fragrance allergens, allowing consumers to make more informed choices to protect their health and well-being.
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Fragrance allergens and irritants
Fragrances are a combination of chemicals that give each perfume or cologne its unique scent. Fragrance chemicals are not benign, and exposure to them can lead to a range of health issues. They can disrupt the hormone system, harm the reproductive system, and cause allergic reactions in both children and adults.
The most common problems observed with fragrance ingredients are skin allergies and skin irritations. Symptoms of a skin allergy include redness, swelling, and vesicles that are commonly described as a 'skin rash'. This occurs when a certain minimum dose of a fragrance substance penetrates the skin and attaches to a skin protein, provoking a response in the immune system. Fragrance substances can be derived from natural sources or chemical synthesis.
Some fragrance ingredients are toxic and can cause a range of health issues. Many fragrance materials can contain carcinogens, endocrine disrupters, neurotoxic chemicals, and environmental toxicants. For example, Butylated hydroxytoluene (BHT) irritates the skin and eyes and can also affect growth rates. Benzyl Salicylate is another fragrance allergen and a potential endocrine disruptor.
A review by the European Scientific Committee on Consumer Safety in 2011 listed 82 substances as contact allergens, including 54 synthetic chemicals and 28 natural extracts. The Scientific Committee on Consumer Safety identified a total of 54 individual fragrance substances and 28 natural extracts as 'established contact allergens in humans'.
To avoid exposure to fragrance allergens and irritants, it is important to read the full list of ingredients on product labels and avoid products that do not provide detailed information on their ingredients.
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Fragrance regulations and standards
Fragrances are regulated by different organisations and laws depending on their intended use and the region in which they are manufactured, formulated, used, and marketed.
International Fragrance Association (IFRA)
The International Fragrance Association (IFRA) is an industry trade group that sets standards for fragrance manufacturers and facilitates safety reviews of fragrance ingredients. IFRA publishes a Code of Practice, which is a set of voluntary standards for fragrance manufacturers. Compliance with the IFRA standards on prohibited and restricted fragrance chemicals is voluntary for manufacturers. However, adherence to the IFRA Code of Practice is mandatory for all companies that are members of IFRA, who produce around 80% of the global volume of fragrance. The IFRA standards ban, limit or set criteria for the use of certain ingredients, based on scientific evidence and consumer insights.
Food and Drug Administration (FDA)
The FDA regulates fragrances that are intended to be applied to a person's body to make them more attractive as cosmetics. Fragrance ingredients in cosmetics must meet the same safety requirements as other cosmetic ingredients. The FDA does not require pre-market approval, but companies and individuals who manufacture or market cosmetics are legally responsible for ensuring their products are safe and properly labelled.
Consumer Product Safety Commission
The Consumer Product Safety Commission regulates products that contain fragrance ingredients but are not applied to the body, such as detergents, fabric softeners, and carpet fresheners.
Pharmaceuticals
Fragrance products that are applied to the body for therapeutic uses, such as treating or preventing disease, or affecting the structure or function of the body, are treated as drugs under the law. These include "aromatherapy" products that are intended to treat or prevent disease or affect the body's structure or function.
Regional Regulations
In addition to these organisations, fragrance ingredients and products are also subject to regional regulations such as the EU's cosmetic regulations and the MoCRA in the US. Recent regulatory changes in the US and EU have put a new emphasis on fragrance safety and ingredient transparency.
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Frequently asked questions
A fragrance is a combination of chemicals that gives each perfume or cologne its unique scent. Fragrance oils are created when molecules come together to form enchanting scents.
Fragrances are usually made from petroleum or botanical raw materials. They can also be derived from synthetic ingredients, which are chemically created and provide versatility, consistency, and cost-effectiveness.
Fragrances can contain toxic chemicals that are harmful to human health and the environment. Some fragrance chemicals can cause allergies, respiratory diseases, endocrine disruption, and even cancer. However, it's important to note that not all fragrances are harmful, and the level of risk depends on the specific ingredients and individual sensitivity.
To avoid potentially harmful fragrances, look for products with full ingredient lists and avoid those that only list "fragrance" or "parfum" without disclosing the specific chemicals. Consult resources like Skin Deep, which provides ratings for personal care products, and look for the EWG VERIFIED mark, indicating the avoidance of ingredients of concern.











































