In short. The material, the area, the date and who treated you. Why one sentence at the end of each visit is what protects you at year two.

Key points

  • Ask them to write down the material class, the area treated, the date and the name of the person who treated you, in your record and on any copy you are given.
  • It takes a moment and it is entirely reasonable to ask.
  • A practice that does this without being asked is a practice that has thought about what happens to its patients afterwards.

In a class that can be dissolved, a missing record is an inconvenience. In this one it is a genuine clinical problem, and it is one that only the patient can prevent, because the record is the only thing that survives a move, a change of clinic or a change of clinician.

What should be written down

Four things: the material class, the area treated, the date, and who treated you. Not a brand name and not an amount, but the class of material and the area it went into. A clinician who knows that a particular area received a non-dissolvable material on a particular date can reason about what appears there later.

The sentence to ask for at the end of every visit

Ask them to write down the material class, the area treated, the date and the name of the person who treated you, in your record and on any copy you are given. It takes a moment and it is entirely reasonable to ask. A practice that does this without being asked is a practice that has thought about what happens to its patients afterwards.

Why it matters if you move or change clinic

A patient who relocates, or who simply decides to be treated somewhere else, arrives as an unknown. Without a record, the new clinician cannot tell what is present, how long it has been there, or what it was, and the safest assumptions available are narrower than the ones a record would allow.

Why it matters for a late lump

A lump appearing months after a session is assessed partly on its timing, and the timing is only usable if the dates are known. A record also tells the assessing clinician whether the same material has been used before in that area. Those are questions a patient cannot answer from memory, and in this class they change what the assessment can conclude.

Why it matters for planning anything else

Every later decision about the face depends on what is already there. Where another treatment is proposed in the same area, where a surgical opinion is being considered, or where the question is simply whether an area has had enough, the record is the starting point. An injected material that cannot be dissolved is part of the anatomy for as long as it lasts, and a plan that does not know about it is a plan made on incomplete information.

Treat these as warning signs

  • No record is kept of what was placed, where, or when.
  • You are told the material class does not matter because the materials are all similar.
  • You are refused a written copy of your own treatment record.

What to bring when someone else has to assess what was placed is set out in Lumps That Appear Months Later: What They Ask of You. Why less material is placed per session here than in a reversible class is covered in The Ceiling Comes First in a Class You Cannot Dissolve.

Related reading

Frequently asked questions

What exactly should I ask to be written down?

Ask for the material class, the area treated, the date and the name of the person who treated you, in your record and in any copy you are given. Those four items are what a later clinician needs, and they can be written in a single sentence at the end of a visit while you are still in the room.

What if the clinic will not give me a record?

That is worth treating as an answer in itself. A practice that cannot tell you what class of material has been placed in your face is a practice whose later reasoning about a lump or a revision would be guesswork, and a patient who is refused a record is being refused the information needed to consent to anything further.

I had treatment years ago and do not know what it was. What should I do?

Say so at the assessment rather than trying to work it out. An unknown history changes what a clinician can plan and what they can promise, and it usually means examining the area and reasoning from what is found rather than from what is recorded. It is a common situation and not a reason to be turned away.

Risks & Limitations

  • There is no dissolving agent for this class. Injected collagen is absorbed over months but cannot be neutralised or removed by an injection, so a result you want less of is addressed later, in part, and by other means.
  • Lumps and nodules can appear weeks or months after a session. The timing is part of how they are assessed, and the answer is not another injection to dissolve the material, because for this class no such injection exists.
  • The change is gradual and it is not lasting. The material is absorbed at a rate that varies between people, no interval can be promised in advance, and a course repeated across years accumulates in a class that cannot be reversed.
  • Injection carries the ordinary risks of any injectable, including bleeding, bruising, infection and irregularity, and the rare vascular event that belongs to material placed into the face. A history of cold sores can be reactivated by treatment in the same area.

When to Seek Care

  • Severe pain out of proportion to the injection, or tissue turning white, grey, mottled or dusky, requires immediate assessment.
  • Any change in vision, including blurring or a patch of lost sight, requires emergency care.
  • A lump, firmness or a change in contour appearing months after a session should be reported when it appears, not at the next scheduled appointment.
  • Redness, heat, pain or discharge at a treated site, or fever with any of those, needs prompt assessment.

References & Further Reading

  • American Society of Plastic Surgeons (ASPS) — procedure and safety guidance
  • National Institute for Health and Care Excellence (NICE, UK) — relevant guidance
  • 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. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.