I refer to dermatology. Not as a failure of scope. As part of a treatment plan.
When a patient has had two adequate courses of oral antibiotics with no meaningful improvement, or presents with nodulocystic acne from the start, the next step is clear. Isotretinoin. And isotretinoin is a dermatologist's prescription to write.
The aesthetic practitioner who understands this threshold is not limiting their practice. They are the person who gets the patient to the right treatment at the right time, and then supports them through what follows.
When does a treatment plan include referral?
NICE NG198 sets the threshold. Refer to secondary care when moderate-to-severe acne has not responded adequately to two trials of antibiotic-based therapy. Each trial should be at least three months. The guideline also supports early referral for severe nodulocystic or conglobate acne, acne with significant scarring risk, or acne causing serious psychological distress.
In aesthetic practice, the history often reveals this bar has already been met before the patient reaches you. Some patients have had multiple antibiotic courses over several years. Others arrive with documented moderate-to-severe acne and no secondary care referral in their history. Your assessment, recorded clearly, can be the thing that finally gets them seen.
That assessment matters. Note the morphology and severity grade, the full antibiotic history including drug, duration and outcome, any prescribable topicals trialled, and the pattern of any previous improvement or relapse. A complete clinical picture gives the GP or dermatologist something useful to act on.
Before the referral: what the aesthetic practitioner does
While waiting for a dermatology appointment, or while supporting a patient through ongoing GP-managed treatment, there is a defined role in aesthetic practice.
Comedonal and mild inflammatory presentations can be supported with non-prescribable topicals. Azelaic acid, niacinamide, salicylic acid at appropriate concentrations. These manage the surface burden without adding to antibiotic resistance risk.
Barrier support matters more in moderate acne than it is usually given credit for. Disrupted barrier worsens inflammatory signalling and makes topical actives harder to tolerate. A simple, fragrance-free cleanse and moisturise routine, chosen for compromised skin, improves treatment adherence.
Photography at every appointment creates a record that serves the referral letter and the patient's own understanding of their progress.
During isotretinoin: what must stop
Isotretinoin creates a fragile, photosensitised, dry skin state. Several aesthetic treatments must stop entirely while a patient is on a course.
Waxing is contraindicated. Skin lifts. Laser and intense pulsed light are contraindicated. The photosensitisation risk and altered wound healing response make them unsafe in this context. Chemical peels above very low strength carry a significant risk of adverse outcomes, including persistent sensitivity and barrier failure. Microneedling carries similar risks. The healing response is altered on isotretinoin. Do not proceed.
These are not overcautious recommendations. They are clinical requirements. A patient who does not know this will book a treatment without telling you they are on isotretinoin. Ask directly at every consultation: are you currently taking any oral medication for acne or any other skin condition?
Skincare support during the course is still within scope. Patients on isotretinoin typically experience significant skin dryness, lip dryness, and barrier disruption. Guiding them toward fragrance-free, ceramide-based moisturisers and an SPF they will actually wear each day is useful and appropriate clinical input.
After isotretinoin: the window before aesthetic procedures
The standard guidance for energy-based procedures and chemical peels after isotretinoin is a minimum wait of six months from the final dose. Some guidance recommends twelve months for deeper interventions.
This period is not wasted time. The skin is remodelling. Sebaceous activity, barrier function, and inflammatory response are normalising. What the aesthetic practitioner can do in this window is support barrier recovery, address post-inflammatory hyperpigmentation that has accumulated during the acne years, and introduce actives gradually as skin tolerance allows.
The post-isotretinoin skin is often more responsive to treatment than pre-treatment skin. When it has been given time to stabilise, outcomes from laser, microneedling, and resurfacing can be significantly better than treating an active, inflamed, or antibiotic-compromised skin.
Documentation across every stage
The JCCP expects practitioners to demonstrate competence in any condition they manage. Acne at moderate-to-severe severity is a medical condition with a defined treatment pathway. Your documentation needs to reflect that you assessed, that you acted within your scope, that you referred when referral was indicated, and that you adjusted your treatment offering appropriately during and after isotretinoin.
Referral letters, medication history, photographs, review dates. These are not bureaucratic additions. They are the clinical record of a coherent treatment plan.
Acne Decoded at aestheticsunlocked.co.uk/courses/acne-decoded covers the full consultation model, NICE NG198 alignment, referral thresholds, and the aesthetic practitioner's role across the full acne treatment cycle. The course is £150 with lifetime access.