In short. Infection, sterility failure, immune reaction and granuloma formation: what has been reported after unapproved cell and tissue injections.
Key points
- A complication from a reversible material can sometimes be addressed by dissolving the material.
- In this area there is usually no such option.
- What was injected cannot be identified with certainty, cannot be dissolved and cannot be removed except by surgery, and operating on a face that has had an uncharacterised product placed in it is a more difficult operation than the original procedure.
The harm profile of an unapproved cell injection is not speculative. It is documented, it has been reported to regulators, and it follows from what these products are rather than from bad luck. The risks below are not a reason to dismiss every preparation alike, and they do apply differently to different products. They are the reasons regulators treat this area as one that requires approval rather than as a cosmetic service.
Infection and sterility failure
Any material injected into the body must be sterile, and sterility has to be assured by a validated process rather than by care. A preparation made at the point of care has no such process behind it. Reported consequences include local infection at the injection site, collections of pus requiring drainage, and in the most serious cases infection that spread beyond the treated area. Contamination can come from the tissue, from the equipment, from the handling or from the processing environment, and none of it is visible in the finished syringe.
Reactions to the material itself
The body can respond to what has been injected. Reported reactions include prolonged swelling and redness, firmness and nodules that do not settle, and granuloma formation, in which the tissue builds a persistent inflammatory mass around the material. Granulomas can be difficult to treat and may not resolve, and because many of these products cannot be dissolved, there is no simple way to remove the cause.
Why these problems are hard to reverse
A complication from a reversible material can sometimes be addressed by dissolving the material. In this area there is usually no such option. What was injected cannot be identified with certainty, cannot be dissolved and cannot be removed except by surgery, and operating on a face that has had an uncharacterised product placed in it is a more difficult operation than the original procedure.
Risk that is unknown rather than absent
A further problem is that the long term behaviour of these preparations is not characterised. There is no register that follows people who have had them, no defined product to study, and often no record of what was in the syringe. That means an unusual outcome cannot be linked to a product, and a safety signal that would appear in a regulated system may never be detected here. Absence of reported harm is not the same as absence of harm, particularly when there is no system doing the reporting.
Three signs that need assessment without delay
- Spreading redness, warmth, fever or discharge from an injection site.
- Firm lumps, persistent pain, or skin that is changing colour weeks or months later.
- Any change in vision, or severe pain around the eye, which needs emergency care.
Managing a complication usually means contacting the service that performed the treatment first, and then seeking an assessment by somebody who can examine the area. Because the material is often unknown, that assessment starts with establishing what was injected, which is a question worth being able to answer before rather than after.
Frequently asked questions
What is the most commonly reported harm from an unapproved cell injection?
Infection at the injection site, including collections of pus that require drainage. It follows from preparation at the point of care, where sterility rests on technique and equipment rather than on a validated manufacturing process.
What does a granuloma mean after a cell injection?
A persistent inflammatory mass that the tissue builds around material it cannot clear. Granulomas can be difficult to treat and may not resolve, and because many of these products cannot be dissolved there is no simple way to remove the cause.
Why can these complications be hard to treat?
Because what was injected often cannot be identified with certainty, cannot be dissolved and cannot be removed except by surgery. Assessment usually starts with establishing what the preparation contained, a question that is easier to answer before treatment than after.
Risks & Limitations
- Transplantation is established medicine for defined blood and immune conditions; the cosmetic products that borrow the name mostly hold no approval for injection.
- An unapproved cell or tissue preparation usually cannot be identified with certainty and cannot be dissolved, so a result that is unwanted or a lump that forms may not be correctable by an injection.
- Reported harms of unapproved cell and tissue injections include infection at the injection site, collections of pus requiring drainage, prolonged swelling, nodules that do not settle and granuloma formation.
- A preparation made at the point of care has no release testing that a regulator has reviewed, and the cell content of what is injected is often not measured.
- There is no randomised comparison of a stem cell facelift against a placebo or against an established treatment, and no agreed definition of the procedure for a trial to test.
When to Seek Care
- Spreading redness, warmth, fever or discharge from an injection site. Have it assessed by a clinician without delay.
- A firm lump, persistent pain, or skin that is changing colour weeks or months after an injection.
- Any change in vision, or severe pain around the eye, needs emergency care immediately.
- Contact the service that performed the treatment first, and then seek an assessment by somebody who can examine the area.
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
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.