Fragrance compliance in cosmetics requires alignment with two interconnected frameworks. One consists of legally binding government regulations, such as the EU Cosmetic Regulation. The other involves self-regulatory standards established by the fragrance industry. Together, these frameworks aim to protect consumer health while allowing manufacturers to create appealing and effective fragranced products.
The primary objective of fragrance compliance is to reduce the risk of allergic reactions and skin sensitization without compromising product performance or consumer experience.
IFRA Standards and Industry Self-Regulation
The International Fragrance Association (IFRA) Standards form the foundation of fragrance compliance worldwide. Although these standards are not legal requirements, cosmetic manufacturers widely adopt them as the accepted benchmark for fragrance safety.
The Research Institute for Fragrance Materials (RIFM) provides the scientific basis for IFRA Standards through toxicological research and risk assessment. IFRA updates its standards regularly to reflect new scientific findings and exposure data.
IFRA Standards classify fragrance ingredients into three main categories. Prohibited substances are not allowed for use due to health or environmental concerns. Restricted substances may be used only within defined maximum concentration limits. Specification standards apply to ingredients that must meet strict purity or compositional requirements.
To account for different exposure scenarios, IFRA assigns products to specific categories based on application area and usage pattern. For example, lip products and body lotions fall under different categories with different permissible use levels. These categories determine the maximum allowed concentration of restricted fragrance ingredients in the finished product.
Fragrance suppliers must issue an IFRA Certificate of Conformity for each fragrance compound. This certificate confirms compliance with the latest IFRA Standards for the intended cosmetic product category and forms a key part of cosmetic safety documentation.
Allergen Labelling Requirements Under Cosmetic Law
While IFRA Standards focus on formulation safety, cosmetic regulations emphasize transparency through allergen labelling. In the European Union, Regulation (EC) No 1223/2009 establishes clear requirements for the disclosure of fragrance allergens.
Manufacturers may generally declare fragrance compositions using the terms “Parfum” or “Aroma” to protect proprietary formulations. However, this allowance does not apply to substances known to cause contact sensitization.
When specific fragrance allergens exceed defined concentration thresholds, manufacturers must list them individually in the ingredient declaration. The threshold is 0.001 percent for leave-on products such as creams and perfumes. For rinse-off products, including shampoos and shower gels, the threshold is 0.01 percent.
Based on scientific advice from the Scientific Committee on Consumer Safety (SCCS), the European Union has expanded the list of mandatory fragrance allergens. Recent amendments, including Regulation (EU) 2023/1545, increased the number of substances requiring individual labelling to more than 80. This change obliges many brands to reformulate products and update packaging to remain compliant.
Integrating IFRA Compliance and Allergen Labelling
Effective fragrance compliance combines two distinct but complementary obligations. IFRA Standards determine which fragrance ingredients may be used and at what concentration levels. Allergen labelling requirements define which substances must appear on the product label.
By integrating both frameworks into product development and regulatory review processes, cosmetic manufacturers can ensure fragrance safety, regulatory compliance, and clear consumer communication across all markets.
How IFRA standards interact with EU law
Two separate rule sets govern fragrance in cosmetics, and they are frequently confused. The Cosmetics Regulation is binding law: its Annexes prohibit or restrict specific substances, and the restrictions must be met. The IFRA Standards are industry self-regulation issued by the International Fragrance Association, setting usage limits by product category based on the Research Institute for Fragrance Materials’ safety data.
IFRA compliance is not a legal requirement in itself, but it matters in practice. Fragrance houses supply an IFRA Conformity Certificate stating the maximum permitted use level of the compound for the relevant product category, and the safety assessor relies on that certificate when evaluating the finished product. A fragrance used above its IFRA limit is difficult to justify as safe, so in effect the standard becomes binding through the safety assessment.
The category matters as much as the dose. The same fragrance compound has different limits in a leave-on face cream, a rinse-off shower gel and a lip product, because exposure differs. An IFRA certificate issued for one category does not authorise the same level in another.
Allergen declaration thresholds
Fragrance is normally declared on the label simply as “Parfum” or “Aroma”. That shorthand stops applying once a listed allergenic substance exceeds its threshold, at which point the substance must be named individually in the ingredient list in descending order like any other ingredient.
The thresholds are 0.001% for leave-on products and 0.01% for rinse-off products. They apply to the concentration of the allergen in the finished product, not in the fragrance compound — a distinction that causes real errors, because a fragrance dosed at 1% can still push an allergen over the leave-on threshold if that allergen makes up a meaningful share of the compound.
The list of substances caught by these thresholds was substantially expanded by Regulation (EU) 2023/1545, taking the number of individually declarable fragrance allergens past 80. Formulations unchanged for years may now need additional names on the label, and the calculation can only be done with an up-to-date allergen breakdown from the fragrance supplier.
Essential oils are not exempt
Natural origin confers no regulatory advantage. Essential oils are complex mixtures of fragrance chemicals, and many of the declarable allergens — limonene, linalool, citral, geraniol, eugenol, citronellol — occur naturally in them at high concentrations. Citrus and lavender oils in particular can carry an allergen load well above that of a synthetic compound used at the same dose.
The same applies to Annex III restrictions. Several essential oil constituents are restricted by concentration, and some materials carry additional constraints, such as limits on furocoumarin content in expressed citrus oils because of phototoxicity. A “100% natural” formulation still needs the full allergen calculation, an IFRA assessment and the same safety evaluation as any other.
For handmade and small-batch producers this is the most common compliance gap: essential oils are bought as raw materials without an allergen breakdown, and the information needed for the label simply does not exist. Ask suppliers for a certificate of analysis and an allergen declaration at the point of purchase, not when artwork is due.
Frequently asked questions
Do I have to disclose my full fragrance formula?
No. Fragrance compositions are protected as trade secrets and are declared on the label as “Parfum” or “Aroma”. Only the listed allergens above their thresholds must be named individually. The safety assessor, however, needs the full breakdown under confidentiality to complete the assessment.
Are natural fragrances exempt from allergen labelling?
No. The thresholds apply to the substance regardless of whether it is synthetic or naturally occurring in an essential oil. Natural products often carry a higher allergen load, not a lower one.
What is an IFRA certificate and do I need one?
It is a statement from the fragrance supplier confirming the maximum use level of the compound for a given product category. It is not legally mandatory, but the safety assessor will normally require it, and its absence is a frequent cause of delay in completing a CPSR.
Can I use the same fragrance across my whole range?
Usually yes, but not necessarily at the same concentration. Permitted levels differ by product category and exposure, so a dose that is acceptable in a rinse-off wash may exceed the limit in a leave-on cream or a lip product.
Ensure your fragrance and aroma ingredients comply with EU regulations. Contact our regulatory experts today. Get in touch!
