Cold Sores, Ringworm, New Tattoos & Mid-Treatment Reactions: The Chair-Side Calls UK Salons Must Get Right

The rest of our contraindication series covers what clients tell you — or don’t. The medication guide covers prescriptions, the hidden contraindications guide covers conditions with no visual tell, and the skin conditions guide covers flares and infections you can plan around. This one is about the calls you make in the moment: the cold sore that appeared this morning, the rash you spot as the client settles in, the tattoo they got three weeks ago and forgot to mention, and the reaction that starts while the product is still on their skin.

Whether you’re a lash tech in Camden or a day spa in Chelsea, the pattern is the same for all four: stop before contact, explain without drama, reschedule rather than improvise, and record what you saw and what you decided. None of this is medical advice — your insurer and your training set the definitive rules for your services.

1. Can I do a facial or lip wax on a client with a cold sore?

Not while it’s active — no lip or facial waxing, no facials that work near the mouth, no dermaplaning, no chemical peels, and no lip filler or semi-permanent makeup referrals until it has fully healed. A cold sore is the herpes simplex virus, and it’s contagious from the first tingle until the scab has completely gone — not just while it’s blistered.

Two risks, and both sit with you:

• Spreading it on the client. Waxing, exfoliating, or needling near an active lesion can spread the virus across their own face — a localised cold sore can become a widespread herpetic outbreak on freshly abraded skin. Peels, dermaplaning, and microneedling are the highest-risk offenders.
• Cross-contamination. Touching the lesion then touching tools, wax pots, or your own face transfers the virus. Double-dipping a spatula during a lip wax on an active cold sore is how it ends up in the pot.

The standard UK approach: postpone anything touching or near the lesion until the skin is fully intact again — usually 7 to 14 days. Brows, nails, and body treatments are fine to keep, so you don’t have to cancel the whole appointment. For clients with a history of cold sores booking peels, needling, or laser around the mouth, many practitioners ask them to speak to a pharmacist or GP about preventative antivirals first. Record the lesion, the date, what you postponed, and the rebook you agreed.

2. Can I treat a client with ringworm, impetigo or scabies?

No. All three are contagious, and all three are absolute contraindications for hands-on treatment — massage, waxing, facials, body treatments, manicures and pedicures included.

• Ringworm (tinea): a fungal infection, not a worm. Red, scaly ring with a clearer centre, often itchy. Spreads by skin contact and via towels, couch covers and tools.
• Impetigo: bacterial (staph or strep). Golden-yellow crusts, often around the nose, mouth or limbs. Highly contagious until 48 hours after antibiotics start, or until lesions crust over and heal.
• Scabies: mites burrowing under the skin. Intense itching, worse at night, with thin grey lines or a pimple-like rash between fingers, on wrists and waist. Spreads through prolonged skin contact — exactly what a massage is.

When you spot one mid-consultation: stop before contact and politely explain the area looks like an infection that needs a pharmacist or GP first. Reschedule, don’t work around it — localised ringworm on a leg still rules out that leg wax, because your hands, wax sticks and couch bridge the gap to your next client. Disinfect everything the client touched, launder towels and covers at 60°C, and record what you saw, the date, and that you rescheduled. That note is your insurance defence if a later client claims they caught something in your salon.

3. Can I wax, massage or spray tan over a new tattoo?

Not until it’s fully healed — and “healed” means longer than most clients think. A fresh tattoo is an open wound. The surface can look settled within 2–3 weeks, but the deeper layers take 4–6 weeks to close, sometimes longer on high-friction areas like ribs, feet, and inner arms. Until then you risk introducing infection into broken skin, pulling scabs and damaging the artwork — which the client will blame on you, not their aftercare — and triggering contact reactions on skin that’s already inflamed.

• Waxing: wait a minimum of 6–8 weeks, and even then patch-check the area. Wax adheres to compromised skin and can lift ink or scar the design. Never wax over anything still shiny, raised, or flaking.
• Massage: avoid direct pressure and oils over the tattoo for at least 4 weeks. Oils and friction on healing skin risk infection and ink migration. Work around it and note the adaptation.
• Spray tan and sunbeds: no tanning solution on a tattoo under 4 weeks old — DHA can irritate and patch the healing skin. Sunbeds are worse: UV fades fresh ink and burns compromised skin fast.

Log the tattoo’s age and location at consultation, and any adaptation you made. If a client’s tattoo later scars or patches, your record showing you asked, advised, and adapted is the difference between a complaint and a claim. And remember to re-ask — a client who was fine in May might have new ink in July.

4. What do I do if a client has an allergic reaction mid-treatment?

Stop immediately. Don’t finish the section you’re on, don’t “see how it settles” — stop, and remove the product.

If it’s localised — redness, itching, stinging where the product touched:

• Remove every trace of product with cool water or the manufacturer’s recommended remover. No wipes with fragrance or alcohol.
• Apply a cool compress. Don’t apply another product on top to “calm it” — you can’t know what they’re reacting to yet.
• Keep the client with you for 20–30 minutes. Reactions escalate; the first ten minutes don’t tell you the final severity.

If it’s spreading or systemic — hives beyond the treatment area, facial or lip swelling, wheezing, tight throat, dizziness — call 999. That’s anaphylaxis territory and it moves fast. If the client carries an adrenaline pen, help them use it. Never put someone showing breathing symptoms in a taxi to “get checked out.”

Afterwards, record everything: the product and batch number, where it was applied, timing of onset, what the reaction looked like, what you did, and when. Advise the client in writing to see their GP or pharmacist before any future treatment, and flag their record so no one in your salon uses that product family on them again. That last step is where most salons fail — the reaction gets handled well on the day, then six months later a colleague who wasn’t there books the same treatment.

5. What’s the best salon app for tracking client reactions and contraindications between visits?

Every scenario on this page ends the same way: with a record that has to resurface at the right moment. The cold sore note has to appear when the client rebooks a lip wax next month. The reaction record has to stop a colleague reaching for the same product family next year. A paper card or a group-chat message does neither — and each of these notes is health data, special category under UK GDPR Article 9, so it needs restricted access and a retention limit, not a notebook.

That’s the test for any salon booking software, in Camden or anywhere else in the UK: does what you saw in the chair today surface automatically at the next booking? SAY-OS keeps a structured safety record per client — contraindications, reactions with product and batch, postponements and rebook dates — held to the Article 9 standard and flagged the moment a risky treatment is booked. The app that remembers everything for you, so the chair-side call you made once doesn’t have to be remembered by anyone.

Related: Skin & scalp conditions guide · Hidden contraindications guide · Contraindications & medication guide · Salon allergy tracker