Why a patch test and consultation matter before you colour

A patch test and consultation aren't delays or extra charges—they're the foundation of a colour result you'll actually want to keep. They tell you whether the stylist understands your hair, whether the colour will work on you, and whether you're both aiming for the same thing. Skip them and you're gambling with your hair.

When you walk into a colourist's chair without either, you're essentially asking them to guess. They guess at your hair's history, its porosity, how it'll take colour, whether you have sensitivities, what "ash blonde" means to you versus what it means to them. A good colourist won't let that happen. They'll want to talk first and test before they touch your hair with anything permanent.

What a patch test actually does

A patch test applies a small amount of the colour mixture to a hidden part of your scalp—usually behind the ear or at the nape—and leaves it for 24 to 48 hours. It's checking two things: whether your scalp will react (redness, itching, burning) and how the colour will develop on your actual hair texture and tone.

Your scalp's sensitivity matters because colouring chemicals can trigger reactions ranging from mild irritation to genuine allergic responses. A patch test catches this before the stylist colours your entire head. If you've never used this particular colour brand or formula before, or if you have a history of sensitive skin, a patch test is non-negotiable.

The colour development part is just as important. How a shade looks depends on your hair's current colour, its structure, and how much pigment it holds. A patch test shows the stylist the actual result they'll get, not the swatch on the colour ring or the "before and after" they saw online. It's the difference between hoping for caramel and getting orange.

The consultation: where your vision becomes a plan

A proper consultation happens before any colour work begins. The colourist should ask about your hair history: previous colours, how long you've had them, whether you've had damage or breakage, what products you use at home. They should ask what you're aiming for and show you images of results they've achieved on similar hair types. They should be honest about whether your goal is achievable in one session or whether it needs multiple visits.

This is where mismatches get caught early. If you're bringing a photo of honey-blonde hair and you have dark, thick hair that's never been lightened, a good colourist will explain what's realistic and what the timeline looks like. If you're correcting a previous colour disaster, they need to know exactly what went wrong so they don't repeat it.

A consultation also covers aftercare. Colour fades faster on damaged hair, and some shades need specific products to stay true. The stylist should tell you what to expect and what you need to do at home to protect the result.

What to bring and what to expect

Bring photos of colours you like, not just a vague description. Show your current hair in natural light if possible—phone photos work fine. Be honest about what you've done to your hair before, even if it was years ago or at another salon. Mention any scalp sensitivities, even mild ones.

Expect the consultation to take 15 to 30 minutes. Some salons do this as part of your booking; others charge a small fee that's often credited back if you go ahead with the colour. Either way, it's time well spent. A colourist who rushes this or dismisses your concerns isn't the right hire.

When you're ready to book, look for someone on Strove who lists consultation and patch testing as standard practice—it's a sign they take the process seriously. Read reviews that mention how thorough they were before the appointment, not just how the colour turned out. Those details tell you they'll protect your hair before they change it.