The operational and regulatory impact of today’s classification landscape on innovation and the fragrance supply chain

In the world of fragrance, reformulation is no longer an occasional exercise - it has become a structural part of how the sector works. Every new hazard classification that touches a fragrance material may trigger a chain of adjustments up and down the supply chain. Suppliers may re-evaluate ingredients, fragrance houses re-balance formulas, and manufacturers update every affected product. None of this is surprising in itself. What is new is the sheer rhythm of it: changes arriving faster, overlapping with one another, sometimes cascading from a single substance classification into hundreds of formulas and thousands of finished consumer products. The sector is adapting, but the pace now shapes our operational reality in ways that deserve to be understood when policy decisions are made.

Across the fragrance value chain, every company – whether an ingredient producer, fragrance house, formulator or finished product manufacturer – is dealing with the consequences of an evolving regulatory landscape. Expectations are rising, hazard classifications are accelerating and the combined effect is a level of operational pressure that would have been difficult to imagine even a decade ago.

From IFRA’s perspective, this change is not about questioning the need for safety. Safety is the foundation of our industry, and our entire product stewardship system is built to support that foundation. What is changing is the pace, the scale and the practical consequences that suppliers, SMEs, perfumers and product developers must navigate.

One of the clearest trends we see is the constant rhythm of reformulation. Reformulation has always been part of the fragrance and cosmetics world: Ingredients evolve, scientific understanding grows and consumer expectations shift, and formulations are adapted to meet those changes. But now the cadence is faster and the effects run deeper. A single substance classification can trigger a wave of activity that touches hundreds of formulas and thousands of finished products. Fragrance houses adjust entire fragrance mixtures.

Manufacturers work through stability testing, compatibility checks and timing for product changes. Each step requires expertise, resources and coordination, and each one must be repeated for every fragrance and when multiple classifications overlap. Regulatory changes take a long time to digest and have effects across the entire value chain.

The search for alternatives illustrates this well. For many materials, especially those with distinctive olfactory or functional roles, substitution is not straightforward. As perfumers often note, a fragrance is not a checklist of ingredients: it is a balanced system. Remove one element and the entire architecture shifts. Even when a technically sound alternative can be found, the outcome is seldom identical. Small differences in volatility, diffusion or stability can change the overall impression. And while technical teams may judge a reformulation acceptable, consumers are often quick to notice even subtle variations. This creates not only a technical challenge but a commercial one: reformulating well-loved products while preserving the character that consumers recognize and expect.

These scientific and sensory realities become even more complex when natural ingredients are involved. Essential oils and botanical extracts are agricultural products, shaped by climate, geography and seasonal variation. Constituents naturally present in these natural ingredients such as methyl eugenol in rose or certain terpenes in citrus are not added intentionally; they are inherent to the plant. When regulatory expectations increase around substances that appear naturally in these materials, the operational implications extend upstream to growers and rural communities. Stability of demand is important for these agricultural systems. Uncertainty makes long-term planning harder, and the fragrance sector is acutely aware of the responsibility it shares with farmers and distillers whose livelihoods depend on aromatic crops.

Consumers and policymakers expect clearer information about ingredients, sourcing and safety. The supply chain has responded by providing more data than ever before-on composition, sustainability metrics and safe-use. But the volume of requests, coming from multiple directions at once, can be difficult for suppliers and smaller companies to absorb. Fragrance houses pass data to manufacturers; manufacturers translate that into documentation for retailers, auditors and certifiers. The information is available, but the administrative weight increases each year, creating a need for systems that are efficient as well as transparent.

These trends also have cost implications. Reformulation work, specifically being a result of hazard considerations but not based on evident risk for the consumer, consumes time, laboratory capacity, evaluation resources and manufacturing planning. At the same time, companies must manage ongoing documentation, compliance checks and internal safety reviews. In some cases, teams that once focused primarily on innovation now divide their time between innovation and maintaining existing products amid evolving requirements. This diversion of resources can be up to 80%. That balance is important: Europe has long been a global leader in fragrance creativity and ingredients science – and maintaining that leadership requires sufficient room for innovation to thrive alongside compliance.

This is also why IFRA continues to underline the importance of risk-based risk management interventions. As stated before, hazard identification is essential, but exposure is what determines real-world risk. The fragrance sector has built decades of safety work through the IFRA–RIFM model, which evaluates ingredients thoroughly and sets safe-use levels based on both hazard and exposure. That approach allows companies to make decisions grounded in science and to implement them consistently across global markets. It is a practical framework that supports both safety and innovation, and it remains central to how responsible companies operate.

In today’s environment, collaboration across the supply chain is more important than ever. Ingredient suppliers need early signals about potential changes. Fragrance houses need time to reformulate, evaluate and secure alternatives. Manufacturers need predictable transition periods to update products without irking consumers. Increasingly, all actors need to work together to ensure that sustainability goals, agricultural supply chains and creative development are not unintended casualties of regulatory evolution. IFRA sees a strong role for shared dialogue in this space-identifying where additional clarity would help, where guidance can reduce uncertainty and where industry can provide useful data to support effective decision-making.

Consumers expect products that are safe, high-quality and responsibly designed, and the fragrance (and cosmetics) sectors are committed to meeting those expectations. The question is how best to achieve that while maintaining a functioning, innovative and globally competitive supply chain. A balanced approach-one that recognizes the technical, creative and agricultural dimensions of fragrance, alongside scientific and regulatory considerations-offers the most sustainable path forward. IFRA will continue to support that balance, working with partners across the value chain to ensure that safety, feasibility and innovation advance together.

From IFRA’s perspective, there are three messages worth bringing into this panel’s discussion:

The fragrance sector has the singular objective of ensuring consumer safety, and the scientific tools needed to assess real exposure already exist and are well-established.

Second, hazard-based risk management interventions have severe downstream effects – operational, economic and technical – that need to be considered when designing regulatory mechanisms. A system that repeatedly triggers reformulation across entire product categories requires predictable timelines, clear criteria for alternatives and functioning derogation pathways.

Third, maintaining Europe’s leadership in perfumery, ingredients science and cosmetic innovation relies upon regulatory instruments that appreciate the distinct characteristics of fragrance materials and the complexity of the systems into which they are incorporated.

Regulation will continue to evolve, and the fragrance supply chain will continue to adapt. The question is how to ensure that adaptation remains feasible without compromising safety or undermining the very innovation that makes Europe a global reference point in cosmetics and perfumery. A balanced, science-based, exposure-aware approach offers the best route to that goal, and IFRA remains committed to supporting policymakers, regulators, and industry partners in advancing that shared objective.