Miso Clinic · Clinical column

GOURI — what to check before treatment

GOURI has no reversal injection. So we start conservatively and first identify the cases where the timing is better moved. It sounds like a lot; in practice most of it is simply choosing a different week.

Clinical column About a 11-minute read September 2026 Miso Clinic, Daegu · Dr. Lee Chi-Hak

The short answer

GOURI has no reversal injection. Two things follow from that, and we do both before anything else — we start conservatively, and we identify the cases where the timing is better moved. Immunosuppressive treatment or an autoimmune condition, pregnancy or breastfeeding, inflammation or infection at the site, and vaccination or dental work falling close by. It sounds like a lot; in practice most of it is simply a matter of choosing a different week.

No reversal injection — and what we do about it

Polycaprolactone is not hyaluronic acid, so hyaluronidase does not dissolve it. That is not a drawback in itself — the same property is why it lasts. It does mean the treatment has to be designed differently.

  • We start conservatively. Rather than placing generously at the outset, we decide at four weeks whether to add. Too little can be topped up; the other direction is harder.
  • We check what is already there. We ask whether PCL, PLLA or CaHA has gone into the same area. Bringing records makes the judgement much more accurate.
  • We settle the plane first. Because it spreads, we aim for the deep dermis and divide across the full face.

When the timing is better moved

These are closer to “not this week” than to “no”.

Situations where we move the date
SituationWhat we do
A cold or generally run downWe book after recovery
Vaccination due or just hadAbout two weeks either side
Dental work due, including scalingSame reason, about two weeks
Inflammation, acne or infection at the siteWe begin once it has settled
Barrier sensitised by recent laser or acid workWe let the barrier recover first

The reason for spacing vaccination and dental work is simple — if they overlap, any reaction cannot be attributed. It is not that they are dangerous; the gap is there to keep the judgement clean.

When we suggest something else instead

  • Pregnancy or breastfeeding — we do not recommend it during this period. We suggest revisiting afterwards, and point toward moisture and barrier care in the meantime.
  • Autoimmune conditions or immunosuppressive treatment — we talk it through first. Depending on the condition and the stage of treatment, we often suggest a different approach.
  • Lost volume as the main issue — GOURI is not a filling formulation. A filling material suits it better.
  • Laxity as the main issue — a different layer. We point toward RF, ultrasound or threads.

The breakdown by skin state is in GOURI in Daegu — which skin it suits.

Medication and past treatments — what helps us to know

  • Blood-thinning medication (aspirin, anticoagulants and similar) — bruising can be greater, so we adjust how we place. Please do not stop anything on your own; just tell us.
  • Previous treatments in the same area — what, when, and where.
  • Allergies or any past reaction to a treatment.
  • Whether you form keloids.

With those four settled, the injection design gets considerably more accurate.

Afterwards — signs to call us about

Most of the time this is mild swelling and needle marks for a day or two. These, though, are reasons to call without counting days.

  • Pain that does not settle with time, or pain worsening on one side only
  • An area turning white or dusky
  • Any change in vision
  • Swelling with redness, heat and tenderness together
  • An area that becomes newly firm after two weeks

These are not common, but seeing them early is what matters. We give every patient a direct route to reach us. On anything palpable, see why lumpiness happens, and how it is prevented.

The first few days

  • First two days — avoid sauna, steam rooms, hard exercise and alcohol.
  • Do not rub the treated area. Wash as usual, gently.
  • Makeup from the next day is fine.
  • Sun protection as you would normally.

Frequently asked questions

Who should not have GOURI?

We do not recommend it during pregnancy or breastfeeding, and we talk it through first if you have an autoimmune condition or are on immunosuppressive treatment. With inflammation or infection at the site we begin once it settles. Most cases are simply a matter of moving the date.

I have a vaccination coming up. When can I have treatment?

We leave about two weeks either side. Not because it is dangerous, but because if they overlap, any reaction cannot be attributed. We space dental work for the same reason.

I take aspirin or a blood thinner.

Please do not stop it on your own — just tell us. Bruising can be a little greater, so we adjust cannula use and placement. Whether to pause medication is a question for the doctor who prescribed it.

Can I have it where I have had filler before?

We establish what went in, when, and where first. PCL, PLLA and CaHA have no reversal injection, so in the same area we judge after checking. If you have records, bringing them helps.

Can it be dissolved if there is a problem?

Polycaprolactone is not hyaluronic acid, so hyaluronidase does not dissolve it. That is exactly why we place conservatively at first and decide at four weeks whether to add — too little can be topped up, the other direction is harder.

What symptoms mean I should call straight away?

Pain that does not settle, pain worsening on one side only, an area turning white or dusky, any change in vision, swelling with redness, heat and tenderness together, and an area that becomes newly firm after two weeks. Please call rather than count days.

What should I avoid for the first few days?

For the first two days, avoid sauna, steam rooms, hard exercise and alcohol, and do not rub the treated area. Wash gently as usual; makeup from the next day is fine.

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Who wrote this

Written and reviewed by Lee Chi-Hak, MD, director of Miso Clinic, Daegu. The treatment standards and injection design set out here are the ones we use in practice.

Miso Clinic
Medical directorLee Chi-Hak, MD
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Everything in this column is general information and does not replace medical diagnosis or treatment. Effects and side effects vary with individual skin condition, age and underlying illness, and the same result is not guaranteed for everyone. Any decision to proceed should be made in an in-person consultation with a physician.

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