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What Is a Borderline Cosmetic Product?

As the name suggests, borderline products are products that cannot be clearly classified solely as cosmetics and may fall under more than one regulatory framework. Within the EU, such classification is determined through a holistic assessment of multiple factors, including the product’s composition, presentation, marketing claims, and intended use.

The “Borderline Manual”, published and regularly updated by the European Commission, provides practical, example-based guidance on which regulation a product should fall under. Although this document is not legally binding, it serves as a key reference for Member States and national authorities and remains a frequently updated resource as of 2025.

The Importance of Correct Classification Under EU Legislation

The European Union cosmetic market is governed by strict and detailed regulations aimed at protecting consumer health. Under these rules, some products may initially appear to be cosmetics but, due to their composition, intended purpose, or marketing claims, may fall under a different regulatory regime. Such products are defined as Borderline Cosmetic Products.

Correct classification of borderline cosmetic products is critical to ensure legal compliance and to prevent regulatory and market-entry risks.

What Does a Borderline Cosmetic Product Mean?

According to the EU Cosmetics Regulation (EC) No 1223/2009, for a product to be considered a cosmetic, it must:

  • Be applied to the external parts of the human body

  • Have the primary purpose of cleaning, perfuming, changing appearance, protecting, or keeping the body in good condition

However, some products partially meet this definition but may also be assessed as medicinal products, medical devices, or biocidal products due to:

  • Claims of therapeutic or physiological effects

  • An intention to affect body functions

  • Specific modes of use or dosage forms

How Is Product Classification Determined in the EU?

Whether a product qualifies as a cosmetic is assessed based on the criteria defined in Regulation (EC) No 1223/2009. The intended function of the product must be to:

  • Clean

  • Perfume

  • Change appearance

  • Protect

  • Keep in good condition

These functions apply only to products intended for use on external body surfaces, as well as teeth and the oral mucosa. However, when a product goes beyond cosmetic effects and claims to treat, modify biological functions, or control microorganisms, it may fall under another regulatory framework.

Classification is assessed based on the following criteria:

  • Intended use of the product

  • Product presentation and marketing language

  • Modus operandi (mechanism of action)

  • Product packaging and dosage form

  • Nature and wording of product claims

These factors must be evaluated collectively, and the final decision is made on a case-by-case basis.

EU Commission Borderline Products Manual

The Borderline Products Manual published by the European Commission is the primary reference document for correct classification. The guide includes:

  • Current regulatory interpretations

  • Product-specific examples

  • Previous classification decisions

and is updated on a regular basis.

Recent updates have highlighted several product categories that frequently raise classification questions in the cosmetic sector.

Examples of Borderline Products

Some examples of product categories listed in the current version of the EU Borderline Manual that may raise classification concerns include:

  • False nail / eyelash adhesives

  • Magnetic eyeliners

  • Products presented in ampoules or vials

  • Tanning concentrates and contour pastes

  • Tattoo removal or fading products

  • Self-tanning concentrates

  • Oral spray or gel formulations

When products are presented in ampoule or vial formats, classification uncertainty may increase, requiring detailed regulatory analysis.

These examples represent product types that may fall under both cosmetic and non-cosmetic regulatory frameworks, highlighting the need for thorough, product-specific assessment to ensure correct classification.

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