In short. Why the same material can be a registered device in one market and an unauthorised injectable in another, and what each regulatory route actually asks.

Key points

  • Where a product is registered as a device, the registration records that a material was assessed for safety and performance.
  • It does not record that the treatment changes anyone’s skin, because that was not the question the route asks.

This is the part of the subject where one material is described in three different ways depending on where it is sold, and the difference is not a difference in the material. It is a difference in which door the product was taken through. An injectable that produces an effect in the body is ordinarily assessed as a medicine, and that assessment asks for evidence of efficacy as well as of safety, meaning trials that show a measurable effect in people. A device route asks a different question: whether the material is safe and performs as described. Some polynucleotide products have been placed on the market as devices rather than as medicines, and some markets have no injectable authorisation for them at all.

What each route asks, and what it does not

A device registration is not evidence that a treatment works, and it was never asked to be. That is not a loophole in the ordinary sense; it is what a device route is for. Materials such as sutures and dressings belong there, and nobody expects a trial of a dressing in the way a medicine is trialled. The difficulty arises when a product registered as a device is then described as though it had passed a medicine assessment, because the registration is real and the claim attached to it is not covered by it.

A registration is not a finding of effect

Where a product is registered as a device, the registration records that a material was assessed for safety and performance. It does not record that the treatment changes anyone’s skin, because that was not the question the route asks.

Why the status differs between countries

Regulators work under different frameworks, and the same product can be a lawfully marketed device in one country, an unauthorised injectable in a second and unavailable in a third. A claim that is permitted under a device registration may be unlawful where the product is sold as a cosmetic. The material a reader meets online therefore often describes the most permissive market the product is sold in, and not the position where the reader lives. That is the practical consequence of the split. A product page written for one jurisdiction can be accurate about the registration it holds and misleading about what that registration covers, and the reader has no way to tell which unless they ask what the product is registered for and where.

Questions about status

  • Is this product registered as a device, as a medicine, or neither, where I would be treated?
  • What is it registered for, and does the claim being made to me fall inside that?
  • Can I see the certificate or the label rather than a summary of it?

Status is checkable, and asking for the document is a reasonable request rather than a difficult one.

Related reading

Frequently asked questions

Why is the same product a device in one country and unauthorised in another?

Because regulators work under different frameworks and the product took a different route to each market. A device route assesses the safety and performance of a material; a medicine route also asks for evidence of efficacy. Status is a fact about regulation rather than about the material, and it can change with no new research published.

Does a device registration mean the treatment works?

No. A device route does not ask for proof that a treatment changes anyone’s skin, so a registration cannot supply it. The difficulty arises when a product registered as a device is described as though it had passed a medicine assessment: the registration is real, and the claim attached to it is not covered by it.

How can I check the status of a product where I live?

Ask directly and ask for the document: is this registered as a device, as a medicine, or neither, and what is it registered for? Regulatory status is a checkable fact rather than an opinion, and a request for a certificate or a label is a reasonable one to make.

Risks & Limitations

  • The published studies behind this product class are small, short and concentrated in a few centres, and a substantial share are supported by the companies selling the material.
  • Long-term behaviour of the material is unmeasured, which is not the same as established and not the same as disproven.
  • The material is marine-derived, so an allergy question exists and no straightforward test predicts a reaction.
  • A material intended to provoke a tissue response can produce nodules or a granuloma, which are harder to manage than an unwanted filler that can be dissolved.
  • A device registration records the safety and performance of a material and is not a finding that the treatment works; an injectable into the face also carries the rare risk of a vascular event.

When to Seek Care

  • A firm lump, nodule or area of swelling appearing weeks or months after an injection — have it assessed by a clinician.
  • Skin that turns white, dusky or painful during or shortly after an injection, or any change in vision — seek care immediately.
  • Spreading redness, warmth or fever, or pain that is worsening rather than settling.
  • Contact the service that holds your records, or the hospital’s outpatient channels, rather than relying on a website.

References & Further Reading

  • European Medicines Agency (EMA) and national regulators — classification of injectable products and published assessment reports
  • U.S. Food and Drug Administration (FDA) — device and drug classification, and approved labelling
  • National Medical Products Administration (NMPA, China) — registration of medical devices and medicines
  • Cochrane Library — systematic reviews
  • Chinese Medical Association Plastic Surgery Branch — clinical guidance

Medically reviewed by Ke He, MD (何锞), Deputy Director & Head of Skin & Laser Aesthetics. Last reviewed: 19 September 2026.

This page is patient education, not medical advice, and it does not cite individual studies. It reviews evidence and regulation; it is not a booking page and does not recommend a treatment. Discuss your own case with a qualified clinician. To ask a question about this review, see Contact & Consultation.