As a candle manufacturer, distributor, or supplier, compliance is just as important as creativity. With ever-evolving regulations across the European Union and UK, businesses in the candle-making industry must ensure their products meet strict safety and labeling requirements. One of the most important identifiers you’ll encounter is the UFI code (Unique Formula Identifier).
In this post, we are going to break down what UFI codes are, why they matter for candle makers, and how your business can stay compliant while building trust with your customers.
What is a UFI code?
A UFI code (Unique Formula Identifier) is a 6-character alphanumeric code under the CLP regulations (classification, labelling, and packaging of substances and mixtures). It links a specific product formulation to its poison centre notification.
For businesses in the candle and home fragrance sector, UFIs are particularly relevant for products that contain hazardous mixtures, such as fragrance oils, essential oils, and other chemical components.
Why UFI Codes matter in Candle Making
- Regulatory Compliance
Since January 2021, UFIs have become mandatory in the EU for hazardous mixtures intended for consumer and professional use. Without the correct UFI code, your candles, wax melts, or reed diffusers may not be legally marketable
2. Safety for End Users
If an incident occurs, such as accidental ingestion of fragrance oil, poison control centres can use the UFI to quickly access the product’s formulation and provide the right medical advice.
3. Trust and Transparency
B2B customers, whether wholesalers, private label buyers, or retailers, want to assurance that the products they source meet all legal standards. Displaying a UFI code demonstrates professionalism and accountability.
Why Do Candle Makers Need a UFI Code?
Candles are often scented with fragrance oils that may contain hazardous substances. If you are selling candles in the EU, and your mixture is classified as hazardous, you must:
- Generate a UFI code for each unique formulation.
- Submit your product information (including safety data) to the relevant authority.
- Print the UFI code on the label so it’s visible to consumers and first responders.
Not every candle requires a UFI—unscented or non-hazardous candles may be exempt—but as soon as you introduce fragrance oils, compliance becomes essential.
How to Generate a UFI Code
- Use the UFI Generator Tool: The European Chemicals Agency (ECHA) provides a free online tool.
- Input your VAT number and mixture formulation number: These details create your unique 16-character code.
- Assign the UFI to a single mixture: Each formula must have its own UFI. If you change the recipe significantly, you’ll need a new code.
Tip: Always keep a clear record of which UFI belongs to which formula for future reference.
Where to Place the UFI Code on Candle Labels
To comply with regulations, the UFI code should be clearly visible on your product packaging. Best practices include:
- Printing the UFI directly on the CLP label.
- Placing it near the hazard pictograms and precautionary statements.
- Using a font size that’s easy to read (minimum 1.2 mm height).
This ensures poison centres and consumers can easily find it when needed.
If you are using our CLP Generator, you can easily add in your UFI number to each label.
UFI codes may sound technical, but they are a crucial part of selling candles safely and legally in Europe. By understanding the rules, generating codes correctly, and adding them to your labels, you’ll stay compliant and protect your customers If you’re sourcing fragrance oils or candle supplies, always check whether they come with the necessary safety data sheets (SDS) to simplify the UFI process.
Pro tip: Create a compliance checklist for every new candle formula so nothing gets missed
Wonder which one of our Fragrances DOES NOT need a UFI code? Check out our page with a list of Fragrance Oils that do not need a UFI code if selling into the EU
Frequent Questions & Answers about UFI Codes
Do all candles need a UFI code?
No. Only candles classified as hazardous mixtures (usually scented candles containing fragrance oils) need a UFI. Unscented or non-hazardous candles typically do not require one.
Who is responsible for generating the UFI code?
The candle maker or brand owner placing the product on the EU market is responsible. If you purchase fragrance oils, your supplier should provide the Safety Data Sheet (SDS), but you must generate the UFI for your final mixture.
Can one UFI code be used for multiple products?
Only if the mixture inside is identical. For example, if you use the same fragranced wax formula across different candle containers, you can use the same UFI. But if you change the fragrance load, wax type, or additives, you’ll need a new UFI.
Where should the UFI appear on candle labels?
If your candles require a UFI and you don’t include one, you may face legal penalties, fines, or product recalls when selling within the EU. It can also damage consumer trust and your brand reputation.
Is a UFI the same as a Safety Data Sheet (SDS)
No. A Safety Data Sheet provides detailed safety information about a chemical, while a UFI is just the identifier code linking your mixture to data submitted to poison centres. Both are required for compliance.
Do I need a UFI for candles sold outside the EU?
UFI codes are part of EU regulations. If you’re only selling outside the EU, they may not apply. However, always check local regulations where you sell.