Why unapproved injectables are dangerous
Products such as Aquafilling-type gels and various unapproved 'body filling' substances have been injected into buttocks precisely because they are cheap and allow large volumes. That is exactly what makes them hazardous. Some are not designed for the human body at all, some cannot be safely removed once placed, and several have been associated with severe delayed reactions: chronic inflammation, hardening, migration of the material through tissue, disfigurement, and serious infections that surface long after the injection.
Unlike an approved, reversible filler, these substances often cannot be dissolved or cleanly taken out, so a problem that appears months later can be extremely difficult to treat. The low upfront price hides a potential cost that is measured in surgeries, scarring, and lasting harm. This is the single strongest reason to care about what is actually being injected rather than only the result promised.
Telling a genuine product from an unapproved one
The clearest signal is transparency about the product itself. A legitimate treatment uses a named, regulator-cleared product that the clinic can identify and show you. Warning signs point the other way: an unnamed 'gel' or 'special formula', a price far below what a genuine product and proper clinic cost, pressure to inject a large volume in one go, and a setting that is not a licensed medical clinic. If nobody will tell you exactly what is going into your body, that is the answer.
You are entitled to ask which product is used and whether it is cleared for use, and a reputable clinic answers plainly. A treatment sold mainly on how dramatic and cheap it is, with the substance kept vague, has the profile of the cases that end badly. At our Busan clinic the product is named and approved, and the conservative, small-volume approach is itself part of staying on the safe side of this line.
Late warning signs that need urgent care
Some of the most dangerous reactions to a bad injection appear not on the day but weeks or even months later. Seek medical attention promptly if you notice a spreading or increasing hardness, new lumps that grow, persistent or worsening pain, redness and warmth suggesting infection, fever, skin colour changes, or fluid and material moving to a new area. Skin that turns dusky, pale, or blistered near an injected area needs urgent assessment, as it can signal a blood-supply problem.
Do not wait these out hoping they settle, and do not return to an unregulated injector to 'fix' them — go to a proper medical facility. If you have had an injection elsewhere and are worried, our Seomyeon clinic can assess the area and advise on next steps. Any fee for consultation or appropriate treatment is shown transparently on our price board, with no obligation attached to simply getting a professional opinion.
Why are unapproved buttock injections so dangerous?
How can I tell a genuine product from an unapproved one?
Can an unapproved injection be removed later?
What late symptoms mean I should get urgent care?
I had an injection elsewhere and I'm worried — what should I do?
Book an assessment at our Seomyeon, Busan clinic for a professional opinion on the area and honest advice on what to do next.
Book an assessment