Running a safe injectable clinic is mostly about systems, not skill. You can be technically excellent with a needle but if your pre-treatment assessment misses a contraindication, your consent form doesn't meet legal standards, or you don't have hyaluronidase on the shelf when a vascular occlusion presents, skill won't save you.
This guide covers the protocols that protect your patients, your licence, and your business. It's based on JCCP and BCAM guidelines, updated for the licensing changes that came into effect in England in October 2025.
Pre-Treatment Assessment: The Protocol That Prevents Problems
Most complications in aesthetic practice are preventable. They come from inadequate assessment, not from injection technique. Building a thorough pre-treatment protocol is the single highest-return investment in clinic safety.
Medical History: What You Must Cover
Every new patient needs a full medical history before any injectable treatment. Every returning patient needs a focused update at each visit. Here's what you can't skip:
Absolute contraindications (do not treat):
- Pregnancy or breastfeeding
- Known allergy to botulinum toxin, hyaluronic acid, or excipients (albumin, lidocaine)
- Active infection at the injection site
- Neuromuscular disorders (myasthenia gravis, Lambert-Eaton syndrome, ALS)
Relative contraindications (proceed with caution and documentation):
- Anticoagulant or antiplatelet medication (increased bruising risk)
- Autoimmune conditions (variable response, potential flare)
- History of cold sores (perioral treatments may trigger reactivation)
- Body dysmorphic disorder or unrealistic expectations
- Previous adverse reaction to injectables
Medications to flag:
- Aminoglycosides (potentiate botulinum toxin)
- Blood thinners including aspirin, clopidogrel, warfarin, DOACs
- Immunosuppressants (may affect filler longevity and healing)
For requirements on who can prescribe and administer Botox in the UK, see our training requirements guide.
Clinical Facial Assessment
A proper assessment takes 5-10 minutes and saves you from complications, complaints, and poor outcomes. Document all of the following:
At rest: Facial symmetry (or asymmetry, which is normal), skin quality, existing scarring, prior treatment signs, skin type for laser/peel suitability.
In motion: Ask the patient to raise eyebrows, frown hard, smile broadly, purse lips. Watch which muscles are dominant, where the lines form, and note any compensatory patterns. A patient with a heavy brow may rely on their frontalis to keep their eyes open, and treating the forehead without accounting for this causes brow ptosis.
Photography: Before photos from at least five angles (front, both obliques, both profiles) in standardised lighting. Non-negotiable. This protects you if there's a complaint and provides the before-and-afters that drive your marketing.
The Cooling-Off Period
The JCCP recommends a minimum 48-hour cooling-off period between the initial consultation and treatment. Some practitioners offer same-day treatment for returning patients, which is defensible if you have a documented treatment history and the patient has previously consented to the same procedure.
For new patients, booking the consultation and treatment on separate days is both a safety measure and a business one. Patients who return after thinking it through are more committed, less likely to experience regret, and more likely to rebook.
Consent: Getting It Right Under the Montgomery Standard
The Montgomery v Lanarkshire ruling (2015) changed consent law in the UK. It's no longer about what a doctor thinks the patient should know. It's about what a reasonable patient in that patient's position would want to know.
For injectable treatments, your consent form must cover:
Treatment specifics:
- Exact areas to be treated
- Product name, manufacturer, and batch number
- Number of units (Botox) or volume (fillers) planned
- Expected outcome with realistic timescale
Risks, including:
- Common: bruising, swelling, redness, headache, tenderness
- Uncommon: asymmetry, ptosis, nodules, product migration
- Rare: vascular occlusion, skin necrosis, blindness (for filler), anaphylaxis
- Treatment-specific: lip incompetence with perioral Botox, Tyndall effect with superficial filler
Alternatives:
- Other injectable options
- Non-injectable treatments (skincare, laser, RF)
- The option of no treatment
Practical matters:
- Cost
- Expected duration of results
- Aftercare requirements
- Follow-up appointment schedule
- How to contact you in an emergency
A signed consent form is not consent. Consent is a conversation. The form is evidence that the conversation happened. If your notes say "consent obtained" with no detail of what was discussed, that's not going to hold up in a complaint.
For broader regulatory requirements around running a clinic, see our CQC registration guide.
Treatment Day: Safety Checks and Injection Protocol
Pre-Injection Checklist
Run through this before every treatment, not just new patients:
- Verify patient identity
- Confirm no changes to medical history since last visit
- Check consent is still valid and the patient hasn't changed their mind
- Verify the patient is well (no fever, active cold sore, acute illness)
- Check product: correct product, within expiry, correct reconstitution (for Botox), batch number recorded
- Confirm treatment plan: areas, doses, and expected outcome
- Take day-of photos
Product Safety
For Botox (botulinum toxin):
- Reconstitute with preservative-free 0.9% saline
- Use within 24 hours of reconstitution (some brands allow longer, check the SPC)
- Document batch number against the patient record
- Store reconstituted product at 2-8 degrees C
For hyaluronic acid fillers:
- Check the packaging is sealed and undamaged
- Verify the product matches your treatment plan (viscosity, cross-linking)
- Record the batch number and expiry
- Have hyaluronidase accessible before you start injecting
Injection Technique Principles
This isn't a technique guide, but certain safety principles apply to all injectable treatments:
- Aspirate in high-risk areas (nose, glabella, nasolabial fold) to check for intravascular needle placement
- Inject slowly to reduce the risk of vascular compression and to allow better product distribution
- Use the smallest effective needle gauge (30-32G for most applications)
- Know the vascular anatomy of every area you inject, and keep an anatomy reference accessible
- Apply pressure post-injection to minimise bruising
Complication Management: Protocols You Must Have Ready
The time to figure out your complication protocol is not when a patient calls you in distress. Write it out, print it, and make sure every member of your team knows where it is.
Vascular Occlusion (Filler Emergency)
This is the complication that ends careers if mismanaged. Signs include: blanching, pain disproportionate to the injection, dusky or mottled skin, and slow capillary refill. It can present during treatment or up to 24 hours later.
Immediate actions:
- Stop injecting
- Dissolve: inject hyaluronidase (minimum 150-300 units) directly into the affected area
- Apply warm compresses to promote vasodilation
- Apply topical GTN paste (2%) to the area
- Massage gently to disperse the product
- Prescribe aspirin 300mg (if no contraindication)
- Photograph, document everything
- Arrange review within 24 hours, or send to A&E if signs of necrosis or visual symptoms
If there are visual symptoms (blurred vision, visual field loss, pain behind the eye): this is a retinal artery occlusion. Call 999 immediately. This is a medical emergency with a narrow treatment window.
Anaphylaxis
Rare, but you must be prepared for it.
- Call 999
- Administer adrenaline IM (0.5mg, 1:1000, anterolateral thigh)
- Lay patient flat, raise legs
- Monitor airway, breathing, circulation
- Give a second dose of adrenaline at 5 minutes if no improvement
- Document everything
Common Complications
Bruising and swelling: Normal. Advise ice, arnica, and avoiding blood thinners post-treatment. Contact the patient at 48 hours to check in. This follow-up call takes 2 minutes and is one of the best retention tools in your practice.
Asymmetry (Botox): Review at 2 weeks. Top-up the underperforming side. Document your assessment and reasoning.
Nodules or lumps (fillers): If early (within days), gentle massage may resolve them. If persistent, consider hyaluronidase to dissolve. Never inject more filler to "even it out."
Ptosis (eyelid or brow drop from Botox): Caused by toxin migration. For eyelid ptosis, apraclonidine 0.5% drops can provide temporary improvement. For brow ptosis, reassure the patient that it resolves as the Botox wears off (typically 4-6 weeks). Document thoroughly and review your injection technique for the area.
Insurance and Documentation
Your insurance cover depends on your documentation. If you can't produce detailed records of your assessment, consent, treatment, and follow-up, your insurer may not defend a claim.
What to Document for Every Treatment
- Full medical history (updated each visit)
- Clinical assessment findings
- Consent discussion details (not just "consent obtained")
- Treatment plan with rationale
- Product used: name, batch number, expiry
- Exact areas treated, doses, and technique
- Injection map (mark the sites)
- Before photos (minimum 5 angles)
- Immediate post-treatment observations
- Aftercare instructions given (verbal and written)
- Follow-up plan
For a complete guide to insurance requirements for aesthetic practitioners, see our insurance requirements guide.
Building a Safety Culture in Your Clinic
Safety protocols only work if your whole team follows them consistently. A few practical steps:
Regular training: Hold a quarterly safety review. Walk through your complication protocols with all staff. Practice drawing up hyaluronidase and adrenaline so that the first time isn't during an emergency.
Incident reporting: Create a simple incident report form. Include near-misses, not just actual complications. A culture where staff report "I noticed the consent form wasn't updated" is healthier than one where problems stay hidden until they escalate.
Audit your records: Pull 10 random patient files every quarter and check them against your documentation checklist. If records are incomplete, fix the system that allows it, whether that's the template, the workflow, or the training.
Stay current: Subscribe to updates from the JCCP, BCAM, and your professional body. Complication management guidelines evolve as evidence develops. What was standard practice three years ago may not be best practice now.
For more on the regulatory environment for aesthetic clinics, see our guides on CQC registration and training requirements. For an overview of building your clinic on solid foundations, explore our regulatory guides for practitioners.
Dr. Shane McKeown is a medical doctor and the founder of Aestheticc, clinic management software built for UK aesthetic practitioners.

Dr. Shane McKeown
Founder & CEO, Aestheticc
Former NHS doctor turned health-tech founder. Shane built Aestheticc after seeing first-hand how outdated systems hold back aesthetic clinics. He combines clinical experience with a passion for software to help practitioners spend less time on admin and more time with patients.
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