What REACH Compliance Means for Products on Your Skin

On 18 December 2006, the European Parliament signed into law a regulation that would take more than a decade to implement in full. It was called REACH: Registration, Evaluation, Authorisation and Restriction of Chemicals. The European Chemicals Agency, established in Helsinki to administer it, spent the following years building what became the most comprehensive chemical safety database in the world. When people talk about what a product is made of and whether it is safe to wear against the skin for hours at a time, REACH is the framework that gives those claims meaning.

The word compliance is used freely. It appears on packaging, in product descriptions, in marketing copy. It rarely comes with an explanation of what the word actually requires. That gap matters most for products worn directly against skin, particularly products with adhesive, where the question of what is in the material is not academic.

What REACH Actually Regulates

REACH covers all chemical substances manufactured or imported into the European Union in quantities above one tonne per year. Manufacturers must register those substances with the European Chemicals Agency, demonstrate their safety, and disclose their use. The Substances of Very High Concern list, known as the SVHC candidate list, is updated twice yearly and now stands at 250 restricted substances. These include carcinogens, substances toxic to reproduction, and persistent compounds that accumulate in the body over time.

For products that contact the skin, Article 33 of the regulation is the operative rule. Any article containing an SVHC at a concentration above 0.1 percent by weight must carry a declaration. The consumer has a right to know. The threshold sounds small, and it is. That precision is the point.

The restriction on nickel illustrates how the regulation works in practice. Under Annex XVII of REACH, nickel and its compounds cannot be present in articles that come into prolonged and direct contact with the skin. The restriction was not written for adhesive lingerie. It was written for fasteners, buttons, belt buckles. The logic extends to any article worn against the body repeatedly: the longer the contact, the greater the exposure, the higher the standard required.

Why Skin Contact Raises the Standard

The skin is the body's largest organ and its primary barrier. Prolonged adhesive contact changes the dynamics of chemical exposure significantly. Unlike a garment that rests loosely against skin, an adhesive article creates a sealed microenvironment. Warmth accumulates. Moisture accumulates. The adhesive bond maintains continuous contact with the stratum corneum, the outermost layer of skin, for the duration of wear.

Dermatologists distinguish between two categories of reaction that can follow from this. Irritant contact dermatitis is a direct chemical injury to the skin barrier. It does not require an immune response; it results from the inherent properties of a substance in sufficient concentration. Allergic contact dermatitis is an immune-mediated response to a sensitising agent, which, once established, can be triggered by subsequent exposures at concentrations too low to cause irritant reactions in others.

REACH does not prevent either outcome with absolute certainty. What it does is establish a floor below which unregulated substances cannot appear in commercial products. That floor is meaningfully different from no floor at all, which is the default condition in markets outside the EU without equivalent regulation.

The Silicone Question

Medical-grade silicone passes REACH scrutiny not by coincidence but by composition. The relevant distinction is between platinum-cured and peroxide-cured silicone. Both produce flexible, stable material. The curing process determines what residues remain after manufacturing.

Peroxide curing, the older and cheaper method, produces volatile organic acids as byproducts. These are driven out in a post-bake step, but trace residues can remain. For industrial applications, this is of no consequence. For direct skin contact, traces become relevant. Platinum curing produces no such byproducts. The addition reaction between the silicone base and the catalyst is clean, leaving a material that carries no residual volatiles. That is why the specification for skin-contact and food-contact applications consistently reads platinum-cured.

ISO 10993, the international standard for the biological evaluation of medical devices, includes a specific testing battery for materials that contact intact skin. The standard assesses cytotoxicity, sensitisation potential, and irritation responses across different exposure durations. A material that carries both REACH compliance and ISO 10993 certification for skin contact has passed two independent frameworks, at different levels of granularity, addressing different potential failure modes.

Medical-grade silicone covers from Korea produced under these standards are tested against both frameworks. The adhesive is evaluated separately from the silicone body, because adhesives carry their own chemical profiles. The combination must pass as a system, not only as individual components.

What Compliance Does Not Say

REACH compliance certifies that a product meets the legal threshold for regulated substances within the European Union. It does not certify that a product is optimally formulated for sensitive skin, that all unregulated compounds are benign, or that a person with a specific allergy will not react. The regulation addresses known substances on a maintained list. New substances are added as evidence accumulates. The list in 2026 is not the list from 2008.

This is not a criticism of the regulation. It is a description of how chemical safety frameworks work: iteratively, against accumulated evidence, with mechanisms to update as knowledge changes. REACH is better understood as a living document than as a fixed guarantee.

The practical implication for consumers is that compliance is a meaningful signal, not a sufficient one. A product that carries genuine REACH certification has been evaluated against the most comprehensive database of restricted chemicals in European law. That evaluation is not nothing. A product that claims compliance without third-party testing against the current SVHC list is making a statement that cannot be independently verified at point of sale.

Reading Claims Accurately

Labels that read "REACH compliant" or "meets EU chemical standards" are not equivalent statements. REACH compliance has a specific legal meaning tied to substance registration, SVHC concentration thresholds, and manufacturer obligations. "Meets EU standards" can mean almost anything.

For adhesive products worn against the skin, the questions worth asking are: what silicone curing method was used; what adhesive formulation; whether the finished product has been tested as a system against ISO 10993; and whether the manufacturer can demonstrate current SVHC list compliance. Most brands do not answer these questions in their product descriptions. A few do.

The European Chemicals Agency publishes the SVHC candidate list publicly, updated in January and July each year. Any individual can search the list. It is 250 entries long and written in the language of formal chemical nomenclature, which makes it inaccessible without some background. But it exists, and its existence is the direct consequence of a regulation that required it to exist.

The Geography of Regulation

REACH applies to articles sold within the EU, regardless of where they are manufactured. A product made in Korea, in China, in Brazil, that enters the European market must meet REACH requirements. Manufacturers exporting to Europe carry the compliance obligation. This is one reason why manufacturing provenance matters for products that make REACH compliance claims: the obligation to register, test, and disclose falls on the entity placing the article on the EU market.

Korean cosmetic and medical manufacturing operates under both domestic regulation and the export compliance requirements of the EU and US markets it serves. The Korean food and drug safety authority, MFDS, runs parallel biocompatibility requirements that overlap significantly with ISO 10993 and REACH provisions. The story of how that manufacturing culture developed is worth understanding; products made to satisfy all three frameworks carry a cumulative quality burden that single-market manufacturing does not face.

Understanding that structure does not require reading any of the primary regulations. It requires understanding that chemical safety compliance is not a marketing claim but an auditable record. The record exists or it does not. The substances are tested or they are not. For products that rest against your skin for hours at a time, the record is worth knowing about.

The work of deciding which products to trust was made considerably easier when the European Parliament signed that regulation in Helsinki in December 2006. What it did was create a standard specific enough to be tested, public enough to be verified, and rigorous enough to mean something when it appears on a product that comes into contact with your skin.