Private cosmetic IV therapy has grown considerably over recent years. Treatments like skin glow infusion, typically a combination of high dose intravenous Vitamin C (7.5g to 25g) and Glutathione (600mg to 2,400mg) are being offered across private clinics, wellness suites and mobile treatment settings. The growth has not been matched by regulatory oversight, and for many practitioners the legal risks that accompany this kind of work are not fully appreciated until something goes wrong.

The clinical risk

Extravasation occurs when an infused solution leaks from the vein into the surrounding tissue. It is one of the most serious complications associated with IV therapy, and one that generates a disproportionate share of the claims we see in this space. A 2024 UK infusion unit valuation recorded an infiltration or extravasation alert in 5.4% of monitored infusions across 2,254 procedures, and that was in a supervised clinic environment. The figure in unmonitored private settings is unlikely to be lower.

The formulation of agents used in cosmetic IV treatments add another layer of risk. High dose Vitamin C sits at a pH of around 5.5 and carries high osmolarity. Such solutions with non-physiological pH and high osmolarity cause significantly greater tissue damage on extravasation than isotonic alternatives. In practice, this can mean anything from localised swelling and skin breakdown to full thickness necrosis, tendon exposure, and injuries requiring surgical debridement or grafting. In terms of potential negligence claims, patients do not need to see much harm before considering whether there are grounds for a claim for damages; a patient’s threshold for adverse consequences will often be low.

The legal landscape

The total cost of clinical negligence settlements in England reached £3.6 billion in 2024-25 (NAO, October 2025). In a private setting there is no indemnity scheme to absorb that exposure. It will therefore fall on the practitioner directly (or their insurance provider assuming appropriate cover is in place). Depending on the severity of the injury, a claim could range from tens of thousands to well over £100,000 once compensation and the patient’s legal costs are factored in. 

The value of early legal advice

Instructing a solicitor before a complaint arises, to review consent documentation, record keeping and clinical practice is essential risk management, and not an admission of a fault. When a complaint does arise, early engagement makes a material difference. In 2024-25, 83% of clinical negligence claims concluded without proceedings being issued (NAO, 2025). Claims resolved at that stage cost significantly less for everyone involved, early resolution means lower overall cost and less disruption to the clinician.

Where claims are won and lost

In our experience, the gap between a claim that settles early and one that proceeds to litigation is rarely the severity of the injury alone, it is the quality of the records and the robustness of the consent process. Practitioners operating in private and mobile settings should not assume that the absence of regulatory oversight means the absence of legal risk. The standard of care expected by a court will be calibrated to the clinical risk of what is being done, not to the regulatory environment in which it is being done.

The areas most likely to determine the outcome of an extravasation claim are ones that can be reviewed and strengthened now: consent documentation that accurately reflects the risks of high-osmolarity formulations, contemporaneous records of cannula site checks and patient observations during infusion, and clear written aftercare instructions that address early warning signs.

Browne Jacobson’s Health and Advisory Team works exclusively within the healthcare sector, advising practitioners and providers across a full range of clinical risk and regulatory matters. The team has a detailed understanding of how private cosmetic practice operates, the pressures, the regulatory gaps, and the points at which legal risk tends to crystallise. Whether the need is a pre-claim advice, review of existing protocols, support following a complaint, or representation in proceedings, we are well placed to help practitioners manage risk in a clear and practical way.