Skin Sensitivity and Allergies Before Beauty Treatments
General guidance on telling your therapist about allergies and sensitive skin, why patch tests matter, and when to speak to a GP or pharmacist.
Most beauty treatments are uneventful, but your skin is not the same as everyone else's, and products that suit one person can irritate another. A little forethought, and honest communication with your therapist, reduces the chance of a bad reaction. This guide offers general information only and is not medical advice.
Why it matters
Many treatments involve products that sit on the skin or close to it: tints, adhesives, waxes, acids, polishes and oils. Reactions can range from mild irritation to a more serious allergic response. They can also appear unexpectedly, because sensitivity can develop over time, including to something you have used before without trouble.
What to tell your therapist
At booking or consultation, mention anything relevant, even if you think it is minor:
- Known allergies, including to hair dye, latex, nuts, fragrances, adhesives or plasters
- Previous reactions to treatments or products
- Skin conditions, such as eczema, psoriasis, rosacea or dermatitis
- Medications, including creams, tablets and any that make skin more sensitive
- Pregnancy or breastfeeding
- Recent treatments or procedures, including sunburn, peels or surgery
- Eye conditions or infections, for lash and brow treatments
A professional will use this to decide whether to go ahead, adapt the treatment or recommend you check with a GP first.
Patch tests
A patch test applies a small amount of product to a discreet area to see how your skin responds before the full treatment. They are standard for hair colour, tints and some lash and skin treatments. Typically you wait at least 48 hours, though the instructions depend on the product.
Read more in our guide on the hair colour patch test. Do not accept pressure to skip one. If a provider is unwilling to do a patch test where one is recommended, consider another.
Signs of a reaction
Watch for:
- Redness, burning or stinging that does not settle
- Itching, swelling or blistering
- A rash or hives
- Swollen eyelids or sore eyes
- Wheezing, tightness in the chest or throat, or swelling of the face
If you have severe symptoms such as difficulty breathing or facial swelling, seek emergency help immediately. For milder reactions, remove or rinse off the product if you can safely do so, stop using it and speak to a pharmacist or GP.
Common sense for sensitive skin
- Do one new thing at a time. Trying several new treatments or products at once makes it hard to tell what caused a reaction.
- Keep a record. Note what was used, the date and how your skin responded. It helps professionals if you need advice.
- Be cautious with new products. Introduce them gradually.
- Avoid treatments on irritated or broken skin.
- Allow time between treatments, and do not rush back if your skin is still reacting.
Questions to ask your therapist
- Do I need a patch test, and when should it be done?
- What are the main ingredients, and could any trigger my known sensitivities?
- Is there a gentler option?
- What should I watch for afterwards, and who should I contact?
Our guide on questions to ask before booking a mobile beauty therapist includes more suggestions.
If a reaction happens after a treatment
- Stop using any products involved.
- Seek medical advice as appropriate.
- Take photographs and note what happened.
- Tell your therapist, who may want to record it and avoid repeating the product.
- Contact support on your booking platform if you need help. See our guide to what to do if you are unhappy with a treatment.
Booking via Compito
On Compito you search by postcode, compare ID-verified providers and can message them about allergies or patch tests before accepting an offer. You then pay online, and reviews from completed bookings help you choose. See how it works and the safety page.
A short pre-treatment checklist
- List anything you have reacted to before: products, fragrances, adhesives, metals, latex or plasters.
- Note current skin issues, such as eczema, psoriasis, rosacea, cuts, sunburn or active breakouts.
- Remember recent treatments, such as peels, retinoids or exfoliating routines.
- List medicines you take that affect skin or healing, and check with your pharmacist if unsure.
- Tell the provider when you book, not at the door.
What a careful provider may do
- Ask a short consultation form's worth of questions.
- Suggest a patch test, often 24 to 48 hours beforehand.
- Offer an alternative product or adapt the treatment.
- Decline to treat if it would be unwise on the day.
A refusal can be frustrating, but it is a sign of care.
Common misunderstandings
- "I have never reacted before." Sensitivities can appear later.
- "Natural means safe." Plant-based products can still cause reactions.
- "A small redness is always normal." Some redness can be expected, but spreading, severe or painful reactions are not.
Recognising a reaction
Signs can include itching, redness, swelling, burning, blistering or a rash. Mild irritation may settle, but you should stop using the product and seek advice from a pharmacist or GP. If you have swelling of the face, lips or tongue, difficulty breathing or feel faint, call 999 or seek urgent help.
Keeping a record
Make a note of product names or descriptions where possible, and photograph the area if there is a reaction. This helps your pharmacist or GP and the provider. For hair colour specifically, see hair colour patch test: why it matters. This is general information, not medical advice.
Frequently asked questions
Can I develop an allergy to something I have used before?
Yes. Sensitisation can develop over time, which is why patch tests are repeated and why previous trouble-free use does not guarantee future tolerance.
Should I see a GP before a treatment?
If you have a medical condition, are pregnant, take certain medications or have had a reaction before, a conversation with your GP or pharmacist is sensible. The therapist may also suggest it.
Is a patch test a guarantee?
No. It reduces the risk but cannot rule out every reaction. Stay alert to any symptoms during and after treatment.