Blood Thinners, Botox, Chemo, Blood Pressure & Tans: The Pre-Treatment Checks UK Salons Miss

This is the third guide in our contraindication series. The medication guide covered Roaccutane, retinol, and pregnancy. The skin conditions guide covered what you can see. This one covers what you usually can't: the tablets in a client's bathroom cabinet, the "tweakment" from last week, the treatment plan they're quietly in the middle of, and the tan that faded just enough to look safe.

Whether you run a single chair in Islington or a laser clinic in Clapham, the pattern is the same: the client doesn't connect their medical situation to your treatment, so the question has to come from you — asked directly, answered honestly, and dated on the record. None of this is medical or legal advice; your insurer, your training body, and each device or product manufacturer set the definitive rules for your services.

1. Can I wax, do microneedling, or treat a client who's on blood thinners?

Proceed with caution — and for anything that breaks the skin, don't proceed without checking first. Blood thinners (anticoagulants and antiplatelets) — warfarin, apixaban, rivaroxaban, clopidogrel, even regular low-dose aspirin — mean a client bruises and bleeds more easily and takes longer to clot. That changes the risk on a lot of treatments you'd otherwise do without thinking.

• Waxing: expect more redness, bruising, and pinpoint bleeding, especially on intimate or facial areas. Usually fine on healthy skin, but warn the client and go gently.
• Microneedling, dermaplaning, extractions, electrolysis: these deliberately break the skin. Bleeding can be heavier and slower to stop, and many insurers and manufacturers list anticoagulants as a contraindication. Get GP sign-off before booking, or decline.
• Massage: deep pressure can cause bruising. Keep it lighter.

One rule above all: never tell a client to skip or stop their medication before an appointment. That's a medical decision for their doctor, not the salon — and it's dangerous.

2. Can I do a facial or massage on a client who's just had Botox or fillers?

Not straight away. Botox and dermal fillers need time to settle, and pressure, heat, or manipulation too soon can move the product, blunt the result, or raise the risk of bruising and infection. The client paid good money for that work — the last thing you want is to be the treatment that ruined it.

• Facials (massage, steam, extractions, LED, microcurrent): wait 2 weeks after Botox or fillers before any facial involving pressure or heat. A gentle, no-pressure cleanse is usually fine sooner.
• Facial massage and lymphatic drainage: avoid the treated zone for 2 weeks — massage can migrate filler and disperse Botox beyond where the injector intended.
• Peels, microneedling, microdermabrasion: wait 2 weeks minimum, longer if the skin is still tender or bruised.
• Body massage away from the face: generally fine — but still check for bruising and recent injection sites.

The catch: clients book a facial a few days after a "tweakment" and don't connect the two. Your consultation has to ask about recent injectables directly, and the answer has to be dated and on record before you start.

3. Can I do a facial or massage on a client having chemotherapy?

Not without adapting the treatment — and never without checking first. Chemotherapy suppresses the immune system, so infection risk rises sharply. It thins and dries the skin and makes it more reactive. Platelet counts drop, so clients bruise and bleed more easily. Many also have a port or PICC line, and the limb on that side may need to be avoided entirely. "She's had it before with no problem" doesn't apply once treatment starts.

• No deep or firm massage — bruising risk, and pressure near a tumour site or lymph nodes is off-limits. Light, gentle touch only.
• No exfoliation, peels, microdermabrasion, or waxing — the skin barrier is already compromised.
• No treatment near a port, PICC line, or a lymphoedema-risk limb.
• No treatment if the client feels unwell, is in the first few days after a cycle, or has broken skin.

What's often fine, with GP or oncology-nurse sign-off: gentle facials with bland products, light hand and scalp massage, and comfort-focused touch — many clients find it genuinely restorative. The rule: get written clearance from the oncology team, adapt the treatment, and record both the clearance and what you did. If you're not trained in oncology or cancer-aware touch, refer on rather than improvise.

4. Can I massage a client with high blood pressure?

Usually yes — but with conditions, and never blind. Hypertension is common and mostly not a reason to refuse. The risk isn't the massage itself; it's not knowing whether the pressure is controlled, what medication the client takes, and whether there are related complications like heart disease, a recent stroke, or kidney problems.

• Ask, and record it. Diagnosed? Controlled? On medication? Any related heart or circulatory conditions? Log the answers on the consultation form.
• If controlled and stable, gentle-to-moderate massage is generally fine. Avoid deep tissue and prolonged heat.
• If uncontrolled, suspected but undiagnosed, or medication recently changed, don't proceed — signpost to the GP for clearance first.
• Sit them up slowly at the end — some blood-pressure medications cause dizziness on standing, and a fall from your couch is your responsibility.
• Skip the sauna, hot stones, and heat wraps for anyone with poorly controlled pressure.

Diagnosing blood pressure isn't your job — spotting the red flags and knowing when to pause is. If you're ever unsure, GP clearance protects the client and you.

5. Can I do laser or IPL hair removal on a client with a tan?

No — not on a fresh tan, and that includes fake tan and recent sunbed use. Laser and IPL target melanin in the hair; tanned skin is full of extra melanin too, so the device can't tell hair from skin. The energy gets absorbed by the skin instead of the follicle, and the result is burns, blistering, and patches of hyper- or hypopigmentation that can take months to fade — or never fully settle on darker skin tones.

• Real sun or sunbeds: no treatment for 2 weeks before and after on any exposed area — follow your machine and insurer's exact wording.
• Fake tan: must be fully exhausted and scrubbed off — usually 1–2 weeks depending on the product. A faded tan still holds enough pigment to cause a reaction.
• Re-patch test if the client's baseline skin colour has changed since their last session. The setting that was safe in winter can burn the same client in July.

Clients rarely volunteer this — they book a course in spring, then top up with St Tropez or a holiday before the next appointment. Ask at every visit: "Any sun, sunbeds, or fake tan in the last two weeks?" — and record the answer with the date.

6. What's the best salon booking app for clients with medical conditions or allergies?

The honest answer: the best system is whichever one guarantees the flag is in front of you before the treatment starts. Every answer above ends the same way — ask, record, date it. That note is health data under UK GDPR Article 9, so it needs a secure, structured client record with restricted access and a retention limit, not a paper card or a shared spreadsheet. And it needs to surface automatically at booking, because a record nobody re-reads on a busy Saturday protects nobody.

That's the gap SAY-OS was built to close: a per-client safety record — medications, conditions, recent injectables, patch tests, sun exposure — held to the Article 9 standard and surfaced before the appointment, not after. The app that remembers everything for you, so the safety call is the default, not the exception.

Related: Contraindications & medication guide · Skin & scalp conditions guide · Injectable treatment tracker · Salon allergy tracker