Is Your Product Actually a Cosmetic? Borderline Products Explained

Quick Answer

Whether a product is regulated as a cosmetic depends on what it is for, not what it's called. Under Article 2 of the Cosmetics Regulation, a cosmetic is intended exclusively or mainly for cleaning, perfuming, changing appearance, protecting, keeping in good condition, or correcting body odour. Once a product's claims or presentation move toward treating, preventing, or curing disease, it can fall into a different regulatory category such as medicines, medical devices, or biocides, each with far heavier obligations than a CPSR and PIF. If a product could qualify as both a cosmetic and a medicine, UK guidance is clear that it will be classed as a medicine.

The Legal Definition of a Cosmetic Product

Article 2(1)(a) of Regulation (EC) No 1223/2009 defines a cosmetic product as a substance or mixture intended to be placed in contact with the external parts of the human body (epidermis, hair system, nails, lips, and external genital organs) or with the teeth and mucous membranes of the oral cavity, with a view exclusively or mainly to cleaning them, perfuming them, changing their appearance, protecting them, keeping them in good condition, or correcting body odours.

Three words in that definition do most of the work: external (it must be applied to the outside of the body or the mouth), exclusively or mainly (the primary purpose must be cosmetic), and intended (what the manufacturer presents the product as being for, through its name, claims, and marketing).

Why the Line Matters So Much

A cosmetic follows the route this blog series has described: CPSR, PIF, labelling, and notification. A medicinal product follows an entirely different path involving marketing authorisation and pharmaceutical-grade evidence. Selling a product as a cosmetic when regulators consider it a medicine means it was never legally placed on the market in the first place, regardless of how safe the formula is or how complete your cosmetic documentation looks.

The Main Borderline Categories

The Cosmetic, Toiletry and Perfumery Association identifies the most common borderline areas on its cosmetic product borderlines guidance as medicines, medical devices, biocidal products, and general consumer products. In practice:

• Medicines — products that claim to treat, prevent, or cure a disease or medical condition, or that act by pharmacological means
• Medical devices — products with a medical purpose that act through physical means, such as certain barrier or wound-related products
• Biocidal products — products intended to destroy or control harmful organisms, such as antibacterial formulations making germ-killing claims
• General consumer products — items that don't meet the cosmetic definition at all and fall under general product safety rules instead

The Claims That Tip a Product Over the Line

Because classification follows intended purpose, your wording is often the deciding factor. Language that tends to push a product toward medicine or another category includes:

• Claims to treat, cure, or prevent a named disease or condition, such as eczema, psoriasis, or infections
• Claims to kill named pathogens or provide antibacterial or antiviral protection. As the CTPA notes, the MHRA's stated position is that hand wash or hand cleansing products making claims to kill named or specific pathogens are medicines
• Claims to affect how the body functions rather than how it looks or feels
• Application to sites that fall outside the cosmetic definition, such as inside the nose

Who Decides, and How

In the UK, the Medicines and Healthcare products Regulatory Agency is the only competent authority that can decide whether a product is a medicinal product. In a borderline case it looks at the overall presentation of the product, including its name, and applies the legal tests for a medicinal product. If a product appears to meet both the cosmetic definition and the medicinal definition, it is classified as a medicinal product. In the EU, national authorities assess classification case by case, with the European Commission's Borderline Manual providing interpretive guidance on where the boundaries sit.

How This Connects to Your Claims

Borderline classification and marketing claims are two sides of the same issue. A claim that is too strong doesn't just lack evidence; it can change the legal category of the product entirely. Our guide to cosmetic product claims and substantiation covers how to keep claims within cosmetic territory and properly evidenced, which is the best protection against an unintended reclassification.

Common Mistakes

Mistake #1 — Assuming the product name controls the category. Calling something a "cosmetic" doesn't make it one. Intended purpose, claims, and presentation decide.

Mistake #2 — Using disease-related language in marketing. Naming a medical condition in product copy or social media can be enough to attract medicinal classification.

Mistake #3 — Making germ-killing claims on cleansing products. Antibacterial or antiviral claims are a well-known trigger for reclassification.

Mistake #4 — Reviewing claims only on the label. Website copy, influencer content, and packaging inserts all form part of how a product is presented.

Practical Checklist

• Confirm the product is applied to a site covered by the cosmetic definition.
• Check that its main purpose is cleaning, perfuming, changing appearance, protecting, conditioning, or correcting odour.
• Review all marketing, not just the pack, for disease-related, treatment, or germ-killing language.
• Be especially careful with acne, eczema, dandruff, antibacterial, and "therapeutic" style wording.
• If a product feels borderline, get a classification view before launch rather than after.

Frequently Asked Questions

Can a product be both a cosmetic and a medicine?

Not in practice. In the UK, if a product appears to meet both definitions, it is classified as a medicinal product, which brings much heavier regulatory requirements than a cosmetic.

Who decides if my UK product is a medicine?

The MHRA is the only competent authority in the UK that can decide whether a product is classed as a medicinal product, looking at its overall presentation, claims, and purpose.

Is a hand sanitiser or antibacterial wash a cosmetic?

It depends on the claims. The MHRA's stated position, as reported by the CTPA, is that hand wash or cleansing products claiming to kill named or specific pathogens are medicines, while a product that simply cleans without such claims can remain a cosmetic.

Does a strong ingredient make a product non-cosmetic?

Not by itself. Classification looks at intended purpose and how the product is presented, alongside its composition and mode of action, rather than on an ingredient in isolation.

Final Word

The most expensive compliance mistakes are often made before any paperwork begins: choosing a product positioning that quietly moves the product out of the cosmetic category. Settling the classification question first, then building your CPSR, PIF, labelling, and notifications on solid ground, saves far more than it costs.

Not sure your product stays on the cosmetic side of the line? NestQual reviews product positioning and claims alongside CPSR, PIF, and notification services, so your documentation matches the category your product genuinely belongs in.

Get a CPSR for your product See the Complete Compliance Pack

Sources

1. European Parliament and Council, Regulation (EC) No 1223/2009 on cosmetic products, Article 2 — eur-lex.europa.eu
2. UK version, Regulation (EC) No 1223/2009, as retained in UK law — legislation.gov.uk
3. Cosmetic, Toiletry and Perfumery Association (CTPA), Cosmetic Product Borderlines — ctpa.org.uk
4. Our guide to Cosmetic Product Claims Substantiation

This article is for general information and does not constitute legal advice. Product classification is decided case by case by the relevant competent authority. Always confirm the status of your specific product with a qualified safety assessor or Responsible Person.