How to Label Candles for Sale in the UK: CLP Regulations

Selling candles in the UK is a genuinely rewarding venture, but before your first order goes out, you need to get one thing absolutely right: your labelling. The Classification, Labelling and Packaging (CLP) Regulation is the legal framework that governs how hazardous substances – including many fragrance oils and dyes used in candle making – must be communicated to the buyer. Get it wrong and you risk product recalls, fines, or worse, a customer being harmed without adequate warning. Get it right and you protect both your business and your customers.

This guide walks you through everything a beginner candle maker in the UK needs to know about CLP-compliant labelling, from understanding the regulation itself to the practical steps of designing and printing your labels.

What Is the CLP Regulation?

CLP stands for Classification, Labelling and Packaging. It is a piece of EU legislation that was retained into UK law following Brexit, meaning it still applies in Great Britain via the GB CLP Regulation. Northern Ireland continues to operate under the EU CLP Regulation as part of the Windsor Framework. In practical terms, the requirements are nearly identical across the UK, but if you sell into Northern Ireland or the Republic of Ireland, it is worth confirming current requirements with your supplier or a trading standards adviser.

The regulation exists because candles are not simply wax and wick. The fragrance oils and certain dyes you use to make them can contain hazardous chemicals – allergens, skin irritants, and substances that are harmful if ingested. CLP requires you to classify, label, and package these hazards in a standardised way so that consumers understand the risks before they buy and use your product.

Importantly, CLP applies to you as a manufacturer or supplier, even if you are working from your kitchen table in Leeds and selling through an Etsy shop. Hobbyist status does not exempt you. The moment money changes hands, you are a supplier, and the regulation applies.

When Does CLP Apply to Candles?

Not every candle automatically requires a full CLP label. Whether you need one depends on the ingredients in your specific formulation. The key factor is whether any component of your candle – almost always the fragrance oil – is classified as hazardous under CLP rules.

Most fragrance oils do contain at least some classified hazardous substances, particularly allergens like linalool or limonene, or skin sensitisers. Your fragrance oil supplier is required to provide you with a Safety Data Sheet (SDS) for every fragrance oil they sell. This document tells you how the oil is classified and what hazard statements apply. Reputable UK suppliers such as Candle Shack, The Soap Kitchen, and Gracefruit all provide Safety Data Sheets as a matter of course.

If your fragrance oil is classified as hazardous and is present in the candle above the relevant concentration threshold, your finished candle must carry a CLP label. In practice, if you are using fragrance oil at a load of 6-10% (standard for most wax types), a CLP label will almost certainly be required.

The Mandatory Elements of a CLP Label

A compliant CLP label must include several specific elements. These are not optional extras – they are legal requirements. Here is what must appear on every CLP-compliant candle label:

• Product identifier: The name of the product as it appears on the Safety Data Sheet, or the name you have given the mixture, clearly stated.
• Supplier details: Your name, address, and – where applicable – telephone number. A PO Box is not sufficient; a physical or registered address is required.
• Nominal quantity: The weight or volume of the product in the container, expressed in grams or millilitres (e.g., 200g).
• Hazard pictograms: The relevant GHS (Globally Harmonised System) pictograms, which are the diamond-shaped symbols with a red border. Common ones for candles include the exclamation mark (irritant) and the flame (flammable).
• Signal word: Either “Warning” or “Danger”, depending on the severity of the hazard. Most candles fall into the “Warning” category.
• Hazard statements (H-statements): Standardised phrases that describe the nature of the hazard, such as “H317: May cause an allergic skin reaction” or “H412: Harmful to aquatic life with long lasting effects.”
• Precautionary statements (P-statements): Standardised phrases advising how to handle the product safely and what to do in an emergency, such as “P102: Keep out of reach of children” or “P273: Avoid release to the environment.”
• UFI (Unique Formula Identifier): A 16-character alphanumeric code that links your product to a poison centre notification. This has been required in Great Britain since January 2021 and is a firm legal requirement for hazardous mixtures placed on the market.

Understanding the UFI and Poison Centre Notification

The UFI is one element that catches many new candle makers off guard. It is a code you generate yourself, linked to your formula, and it must appear on your label. The UFI allows poison control centres – in the UK, the National Poisons Information Service (NPIS) – to access detailed formula information in the event of an emergency involving your product.

To get a UFI, you first need to submit a poison centre notification. In Great Britain, this is done through the UKPID (UK Poisons Information Database) notification system managed by the Health and Safety Executive (HSE). You submit details of your formula – the chemical composition, concentrations, and product information – and in return you receive a UFI code. The HSE provides guidance and the submission portal on their website.

This process can feel daunting at first, but the online portal is straightforward once you have your Safety Data Sheets to hand. If you change your formula significantly – for example, switching fragrance oils or adjusting the concentration – you will need to update your notification and may need a new UFI.

Allergen Labelling and Fragrance Disclosure

Separate from CLP, there is also industry guidance – and increasingly, consumer expectation – around fragrance allergen labelling. The International Fragrance Association (IFRA) publishes standards for fragrance use, and the British Candlemakers Federation (BCF) provides guidance to UK makers on responsible formulation and labelling.

The EU Cosmetics Regulation requires certain allergens to be listed by name when they exceed specific concentration thresholds in cosmetic products. Candles are not legally classified as cosmetics, but the allergen list is relevant because the same substances appear in fragrance oils. Many professional UK candle brands voluntarily list key allergens on their labels or product descriptions, particularly linalool, limonene, citronellol, and geraniol. This is good practice and increasingly expected by informed consumers.

CLP Label Design: Practical Considerations

A label that meets the legal requirements but is impossible to read is still a problem. CLP sets out minimum font size requirements – the text must be clearly legible. For a container with a surface area of less than 3 square centimetres, reduced labelling provisions apply, meaning some information can be provided on a fold-out label or accompanying leaflet instead.

Most standard candle vessels – 20cl to 30cl glass jars, for instance – have enough surface area to accommodate a full CLP label without difficulty. Here are some practical design tips:

• Use a minimum font size of 6pt for hazard and precautionary statements, though 8pt is more readable and strongly recommended.
• Ensure strong contrast between text and background – black text on white or pale backgrounds is safest.
• Pictograms must be printed in colour (red border with black symbol on white background) and must be a minimum size proportional to the label – generally at least 1cm x 1cm for most candle labels.
• Do not place CLP information on the base of the jar where it cannot be seen at point of sale.
• If you use a front label and a back label, put the CLP information on the back label so your branding remains clean on the front.
• Always proof-read the H and P statements against your Safety Data Sheet before printing a batch of labels.

Where to Get Your CLP Assessment Done

Unless you have a chemistry background, you will most likely need help with your initial CLP classification. There are several routes available to UK candle makers:

1. Use your fragrance supplier’s CLP data: Many UK fragrance suppliers, including Candle Shack and The Candle Lab, provide pre-calculated CLP information for their fragrance oils at specific usage rates. This is a helpful starting point but remember that your finished candle is a mixture, and the full product – wax, fragrance, dye, additives – must be assessed as a whole.
2. Use a specialist CLP consultant: Several UK businesses specialise in CLP assessments for small batch manufacturers. Companies such as Safety Data Sheets UK or independent consultants found through the Chartered Institute for the Management of Sport and Physical Activity (though primarily for cosmetics, their directories are useful) can produce compliant documentation for a fee, typically £30-£80 per product.
3. Use candle-specific CLP software: Platforms such as Cosphatec or Candle Shack’s own label tool can generate CLP data based on the ingredients you input. These are particularly useful for makers with several product lines.
4. Attend a training course: Organisations like The School of Candle Making (based in the UK) and various independent tutors offer CLP-specific workshops, both in person and online. These give you the knowledge to assess future products yourself.
5. Contact your local Trading Standards office: Trading Standards officers are there to help businesses comply with the law, not just to enforce it. If you are unsure, reaching out for guidance before you start selling is a sensible step.

CLP Requirements at a Glance: Comparison Table

This table is intended as a working reference rather than a legal checklist. Regulations can change, and it is your responsibility as the manufacturer or importer to ensure your labels reflect the most current requirements. If you are unsure whether a particular fragrance oil triggers classification, request a full Safety Data Sheet from your supplier and cross-reference section 2, which covers hazard identification. Do not rely on a supplier’s label alone, as these are sometimes incomplete or written for a different intended use of the fragrance.

It is also worth noting that label space is often a practical constraint for candle makers, particularly those producing small vessels such as tealights or travel tins. Where a label cannot physically accommodate all required information, CLP permits the use of a fold-out label or an attached tag, provided the most critical elements — including pictograms and signal words — remain visible on the outer surface. Digital QR codes linking to safety information are not currently accepted as a substitute for mandatory label text under UK CLP, so physical space must be planned for from the outset of your product design.

Conclusion

Labelling candles correctly for sale in the UK is not simply a matter of aesthetics or professionalism — it is a legal obligation that protects both your customers and your business. UK CLP regulations set out clear requirements for any candle containing a classified hazardous mixture, and ignorance of those requirements does not provide any protection if a product is found to be non-compliant. By obtaining accurate Safety Data Sheets for every fragrance you use, generating UFI codes where required, and reviewing your labels each time you reformulate a product, you can sell with confidence and avoid the significant risks that come with non-compliance. When in doubt, consult a qualified product safety assessor or contact the Health and Safety Executive for guidance specific to your products.