Why Do I Need a Patch Test?

At NOCO Hair, your safety and comfort are just as important to us as the end result. That’s why we require a patch test for all colour services—no exceptions.

👉 If you’re planning to have colour with us and haven’t had a patch test or colour service at NOCO in the last 6 months, you’ll need one at least 48 hours before your appointment.

Even if you’ve coloured your hair for years with no issues, reactions can still happen—especially when switching brands or salons. Reactions can include:

Skin irritation or rashes
Swelling or discomfort
In rare cases, more serious allergic responses

We use L’Oréal Professionnel colour and follow their strict guidelines to make sure every service is as safe as it is stunning.

How does it work?

It’s quick and easy:
We apply a tiny amount of colour to the inside of your arm, and you’re free to go straight after. The test takes less than 5 minutes.

Once done, you’re covered for 6 months unless your health changes or you switch your colour service significantly.

We recommend adding your patch test to a consultation—it’s the perfect time to talk through your colour goals and make a plan with your stylist.

Patch Test FAQs

I’ve had my hair coloured at another salon. Do I still need a patch test?
Yes. Every salon uses different colour lines, mixing methods, and products. We use L’Oréal Professionnel, and we need to test you with our system to be safe.

I’ve been colouring my hair for years and never had a problem. Why now?
Allergic reactions can develop over time, even if you’ve never had one before. Patch testing is simply a precaution to protect you—it’s about safety, not assumptions.

Can I sign a disclaimer to skip the patch test?
No, we’re afraid not. Disclaimers aren’t valid in place of testing. We’re committed to safety and legally required to follow manufacturer and industry guidelines.

I want to book colour soon—how quickly can I get tested?
Pop in anytime—we don’t need to book a full appointment just for a patch test. As long as it’s done 48 hours before your colour service, you’re good to go.

Where do you apply the patch test?
We place it on the inside of your arm, not behind the ear anymore. It’s subtle, quick, and you can carry on with your day as normal.

How long is my patch test valid for?
Your test is valid for 6 months, unless your health changes (e.g., pregnancy, illness, medication changes) or you switch to a new type of colour.

At NOCO Hair, your safety and comfort are just as important to us as the end result. That’s why, before any colour appointment, we require a patch test—a small but essential step in ensuring your visit is smooth, safe, and worry-free.

A patch test checks whether you might have a reaction or sensitivity to hair colour. Even if you’ve coloured your hair before, your body can change over time—and reactions, while rare, can be serious.

These reactions can include:

Skin irritation or rashes
Swelling or discomfort
In very rare cases, more severe allergic responses

That’s why we follow strict safety guidelines and always test before colour services, especially when using our professional range, L’Oréal Professionnel.

What happens during a patch test?

It’s quick and simple:
We apply a tiny amount of colour on the inside of your arm, and that’s it. No need to wait in the salon—just leave it on and monitor it over the next 45 minutes before wiping/rinsing off.

Once completed, your patch test is valid for up to 6 months, as long as there are no changes in your health or hair routine.

Many guests choose to book their patch test alongside a consultation, which is a great way to meet your stylist, talk through your goals, and get everything set up in one visit.

Patch Test FAQs

I’ve had my hair coloured at another salon—do I still need a patch test with NOCO?
Yes. Every salon uses different products and processes. We use L’Oréal Professionnel colour, and are required to carry out our own test before your first service with us.

I’ve been colouring my hair for years with no problems. Why do I need this now?
Allergies can develop over time—even with familiar products. This is a safety-first approach for your well-being, not just a salon policy. It’s a small step that makes a big difference.

Can I sign a disclaimer instead? I promise I won’t make a claim.
We totally understand the intent, but no, sorry—we don’t accept disclaimers in place of patch testing. Our duty of care and our professional standards mean we must follow safe practice for every guest.

I need colour urgently—can I still get in?
If it’s your first colour visit with us, just pop in for a patch test at least 48 hours in advance. It only takes a minute and doesn’t require a full appointment. Once that’s done, you’re good to go.

At NOCO, it’s never just about the service—it’s about the relationship.
Patch testing is part of the care, connection, and professionalism that defines how we do things. Thank you for being part of a salon experience that puts people first.