- Cosmetic toxicologist at Euverify, specialising in cosmetic product safety, PIF and CPSR preparation, and regulatory compliance with EU and UK Cosmetic Regulations. Conducts toxicological assessments of cosmetic ingredients and formulations, reviews product safety reports and manages CPNP and SCPN product notifications. Dedicated to supporting brands in achieving compliance with EU and UK cosmetic standards.
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EU Cosmetic Preservatives: What Annex V Really Means for Your Product
This situation comes up often. A manufacturer reformulates a leave-on serum using a preservative system that worked in a rinse-off product. The levels are within limits and the challenge test passes. Still, the safety assessor flags an issue. One preservative is not allowed in leave-on products under Annex V, so the formula has to change.
This happens more than expected. Annex V of the EU Cosmetics Regulation (EC) No 1223/2009 is a positive list, meaning only listed cosmetic preservatives can be used, and each comes with specific conditions:
- Maximum concentration in the finished product
- Allowed product types, such as rinse-off or leave-on
- Restrictions on where the product can be used
- Required label warnings
If any of these are missed, the product is not compliant, even if everything else is correct.
This post explains what Annex V requires, where problems tend to come up, and common questions, including parabens and the challenges of natural preservation systems.
Why Cosmetic Preservatives Are a Regulatory Priority
Most cosmetic products contain water, which makes them prone to bacteria, mould, and yeast growth. A face cream used daily, opened often, and exposed to heat and humidity is constantly at risk of contamination. Without proper preservation, this can happen without the user noticing.
Contaminated products can lead to skin or eye infections and other reactions. In some cases, the product may still look and smell normal while carrying harmful microbes. The ICCR working group, which includes regulators from the EU, US, Canada, Japan, and Brazil, has made it clear that without preservatives, cosmetics can pose a real public health risk.
Consider everyday products. Mascara brushes touch the eye and go back into the tube each time. Shampoo bottles in the shower often get water inside. Face creams in jars are exposed to fingers daily. Each of these situations creates a risk. Regulations exist because these risks are real and the consequences can be serious.
What Is Annex V of the EU Cosmetics Regulation and What Does It Cover
Annex V is a table. Each entry is a permitted cosmetic preservative, identified by its reference number and INCI name, with the conditions under which it can be used. For every preservative in a formula, there are four things to check.
Parameter | What it means in practice |
Maximum authorised concentration | The upper limit for the finished product. This is a ceiling, not a target. Exceeding it, even marginally, makes the product non-compliant regardless of challenge testing results. |
Scope of permitted use | Whether the substance is permitted in all cosmetic products, or restricted to specific types. A preservative permitted only in rinse-off products cannot be used in a leave-on formula at any concentration. |
Application site restrictions | Some entries exclude use around the eyes, on mucous membranes, or on broken skin. These restrictions are part of the legal conditions of use, not advisory guidance. |
Mandatory label warnings | Several Annex V entries require specific statements to appear on the product label when the substance is used. Omitting these is a labelling non-compliance that sits alongside any formulation issue. |
The list gets updated regularly through Commission delegated regulations as the Scientific Committee on Consumer Safety (SCCS) completes new assessments. Entries are added, changed, or removed. A preservative that was permitted at a certain concentration a few years ago may have had its limit reduced or a new restriction added since then. This is why checking the current consolidated version of the regulation matters every time a formula is being developed or reviewed.
Are Parabens Allowed in EU Cosmetics? What Annex V Currently Permits
Parabens are one of the most debated ingredients in EU cosmetics. Public concern has lasted for years, often going beyond what the evidence shows. They are widely used preservatives with a strong safety record at approved levels. Although concerns focus on possible hormone effects, the SCCS has repeatedly confirmed that permitted parabens are safe within current limits.
Under EU rules:
- Methylparaben and ethylparaben: allowed up to 0.4% each, or 0.8% combined
- Propylparaben and butylparaben: allowed up to 0.14% each, or 0.14% combined
- Isopropylparaben, isobutylparaben, phenylparaben, benzylparaben, and pentylparaben: not allowed at all
Some products labelled “paraben-free” use isopropylparaben or isobutylparaben instead. These are not restricted alternatives, they are banned, so this is not compliant.
There is also a specific restriction. Propylparaben and butylparaben should not be used in leave-on products for the nappy area of children under three. This needs to be considered in both formulation and labelling.
For manufacturers choosing to avoid parabens, the main challenge is finding an effective replacement. Many alternatives have a narrower range, are more sensitive to the formula, or come with their own limits. Simply swapping in another preservative at the same level often leads to weaker results. In most cases, developing a good alternative takes more time than expected.
Natural and Organic Cosmetics Still Need to Comply with EU Preservative Rules
The rise of natural and organic cosmetics has created a compliance issue that is often overlooked. These products are usually positioned in one of three ways:
- Marketed as free from synthetic preservatives
- Described as self-preserving
- Based only on naturally derived antimicrobial ingredients
None of these claims removes the need to keep the product properly preserved and safe over its shelf life.
Under EU law, the requirements are the same for all cosmetics. Any product that contains water must be adequately preserved and tested before it is placed on the market. Being labelled natural or organic does not change this.
Why Natural Preservative Systems Fail Challenge Testing More Often
Natural preservative systems are harder to get right in challenge testing. Synthetic options like parabens and phenoxyethanol tend to work consistently across different formulas. Many natural alternatives are more sensitive to pH, less stable with other ingredients, and may not protect well against all types of microorganisms.
A formula that passes testing once can fail after small changes, such as adjusting another ingredient, a slight shift in pH, or different packaging. Because of this, natural systems usually need more testing during development and more detailed support in the safety report than conventional preservatives.
Naturally Derived Does Not Mean Annex V Exempt
Some naturally derived ingredients with antimicrobial properties are listed in Annex V. Benzoic acid and its salts are examples, as well as sorbic acid. Being natural does not change the rules. If an ingredient is used to preserve a product, it must meet the Annex V conditions.
At the same time, some natural ingredients with antimicrobial effects are not listed in Annex V at all. Using them for preservation, even at low levels, means using something that is not approved for that purpose under EU law. This is not just about going over a limit. It is about using an ingredient in a way that is not allowed.
What Self-Preserving Actually Means Under EU Cosmetics Law
Some products do not need preservatives because their formula does not allow microbial growth. This includes products with no water, very high or low pH, or high alcohol content.
If a product is truly self-preserving, it does not need a preservative from Annex V. But this has to be proven. The product still needs challenge testing, and the results must be included in the CPSR. A safety assessor will not accept a self-preserving claim without clear evidence that the product can resist microbial growth during normal use.
How EU Cosmetic Preservative Systems Are Assessed and Why It Matters
No single preservative works in every product or under all conditions. The ICCR working group has made this clear, pointing out that formulators need a range of preservative options to properly protect different types of products.
Understanding this helps explain why compliance issues come up so often in practice.
How Water Activity and pH Affect Preservative Efficacy in Cosmetics
Most cosmetics sit around a neutral pH, which is a good environment for bacteria and fungi. Some preservatives only work well at low pH and can lose effectiveness at neutral levels.
If a preservative system is reused in a different product without checking the pH, challenge testing can fail. This is not always because the preservative is unsuitable, but because the conditions have changed. The overall formula matters just as much as the preservative itself.
Why Product Packaging Is Part of Your EU Preservative System
Packaging is part of how a product is preserved. A face cream in an open jar, used daily with fingers, has a higher contamination risk than the same formula in an airless pump.
Some Annex V entries reflect this by setting different limits based on product type. If you change the packaging, you need to reassess the preservative system. It cannot just be carried over without checking.
Challenge Testing Requirements Under the EU Cosmetics Regulation
Challenge testing adds specific microorganisms to the finished product to check if the preservative system can control them over time. It must be done on the final product in its final packaging, not on a prototype.
If there are any significant changes to the formula, packaging, or manufacturing process, the test needs to be repeated. The results must be included in the Cosmetic Product Safety Report. A product cannot be placed on the EU or UK market without a CPSR confirming that the preservative system is effective.
Common Annex V Compliance Mistakes That Cosmetic Manufacturers Make
Are You Working from an Outdated Version of Annex V?
Formulas approved a few years ago may no longer be compliant. Annex V is updated over time, with changes to concentration limits and product-type restrictions.
Before finalising a new product or reviewing an existing one, always check the latest version on eur-lex.europa.eu instead of relying on older copies or summaries.
Why You Cannot Copy a Preservative System from a Rinse-Off to a Leave-On Product
A cosmetic preservative allowed at a certain level in a rinse-off product like shampoo may have a lower limit in a leave-on product, or may not be allowed at all.
This is a common issue in formulation reviews. The product type is clearly stated in each Annex V entry, but it is easy to miss when adapting an existing formula instead of creating a new one.
Mandatory Label Warnings Required by Annex V Preservative Entries
Some Annex V entries include warnings that must appear on the product label. These are legal requirements, not optional.
A product can meet all other rules but still be non-compliant if a required warning is missing. The safety assessor should identify this during the CPSR review, but it is better to check this during development rather than at the final stage.
Using an Ingredient as a Preservative Without Declaring It Does Not Avoid Annex V
If an ingredient is acting as a preservative in a formula, Annex V still applies, no matter how it is listed on the INCI.
Calling it a fragrance, conditioning agent, or active ingredient does not change its function. Regulators look at what the ingredient actually does in the product. If it works as a preservative, it will be treated as one.
EU vs UK Cosmetic Preservative Requirements: What Has Changed Since Brexit
Since Brexit, the UK has its own cosmetics rules. Its version of Annex V started as a copy of the EU list but is now updated separately. Changes made in the EU do not automatically apply in the UK.
In practice, a formula that meets EU requirements still needs to be checked for the UK. If a substance is updated in one list but not the other, the same product may face different rules in each market. For businesses selling in both, tracking both lists is part of staying compliant.
The two lists are still similar for most preservatives, but they are slowly diverging. The only reliable way to confirm compliance is to check the latest EU and UK regulations side by side.
What Your Cosmetic Product Safety Report Must Say About Preservatives
The Cosmetic Product Safety Report required under Article 10 must assess the safety of the finished product, including the preservative system.
The safety assessor needs to review these key points as part of this process:
- Confirmation that each preservative used appears in Annex V and is used within its permitted conditions and concentration limits.
- Evidence from challenge testing that the preservative system provides adequate protection in the finished formula in its final packaging.
- Assessment of sensitisation and allergy risks, particularly for products used around the eyes, on children, or on sensitive or damaged skin.
- Confirmation that any mandatory label warnings required by Annex V are included on the product packaging.
- Review of the preservation system in the context of the intended use, application site, frequency of use, and the consumer population the product is intended for.
For natural and organic products using alternative preservation systems, the safety assessment needs to go further. It should clearly explain why the system is effective, what testing was done, and how it was shown to work under real conditions of use.
Need Help with Annex V Compliance for Your Cosmetic Products?
Cosmetic preservatives are one of those areas where small formulation decisions have real regulatory consequences. Whether you are developing a new product, importing cosmetics into the EU or UK for the first time, trying to formulate without conventional synthetic preservatives, or reviewing an existing product against the latest version of the regulation, the stakes are higher than people often realise.
If your CPSR has flagged a preservation issue, if you are not sure whether your chosen preservatives are permitted for the product type you are developing, or if you need to understand the difference in requirements between the EU and UK markets, Euverify can review your formula and documentation before a problem gets as far as the market.
Learn more: https://euverify.com/cosmetics/
Frequently Asked Questions
Do preservatives need to be listed on the product label and if so how?
Yes. Under Article 19 of the EU Cosmetics Regulation, all ingredients including preservatives must be listed using their INCI names in descending order of weight. They do not get special treatment on the label compared to other ingredients, unless an Annex V entry requires a specific warning statement to appear alongside the listing.
Can a preservative permitted in the EU be used in a cosmetic sold in the UK after Brexit?
Not automatically. The UK maintains its own permitted preservatives list under the retained UK Cosmetics Regulation. It started as a copy of the EU Annex V list but is now updated independently. A preservative added to the EU list since Brexit does not automatically become permitted in the UK. Both lists need to be checked separately each time a formula is developed or reviewed.
Is there a maximum number of preservatives a cosmetic product can contain?
No. There is no rule limiting how many different preservatives a formula can use. What matters is that each one appears in Annex V and is used within its permitted concentration and conditions. Using multiple preservatives is common practice and is often necessary to protect against a wider range of bacteria and moulds. The combination is reviewed as part of the product safety assessment.
What is the difference between a preservative and an antioxidant in a cosmetic formula?
They serve different purposes. Preservatives prevent microbial growth, protecting the consumer from contamination by bacteria and moulds. Antioxidants prevent the formula itself from degrading, protecting ingredients like oils from going rancid. Annex V covers preservatives only. Antioxidants are not regulated through a positive list in the same way, though they must still be safe for use and are reviewed in the product safety report.
If a cosmetic product is manufactured outside the EU and imported, who is responsible for ensuring the preservatives comply with Annex V?
The Responsible Person. Every cosmetic product placed on the EU market must have a Responsible Person established within the EU. For products made outside the EU, this is typically the EU importer or a designated representative. They are legally accountable for the product meeting all regulatory requirements, including Annex V compliance. The formula must be reviewed against the current EU Annex V list before the product goes on sale, and that obligation sits with the Responsible Person.
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