A personal colour analysis is roughly two and a half hours in a chair by a window, watching your own face change. That is the honest summary. Here is the longer one — what to do beforehand, what actually happens in the room, and what you leave holding — because the appointment works best when the only surprise is the result.
Before you arrive
The session reads your colouring at its factory settings, so the preparation is mostly subtraction. Come with a clean, bare face — no makeup at all, including tinted balm, CC cream, or that dab of concealer you have convinced yourself is invisible. No self-tanner, with no traces remaining; if you tan in the sun, book for when your tan is at its lowest ebb. Skip the jewellery, or be ready to take it off — metal throws its own colour at your face, which is a separate and interesting subject, but not during the diagnosis.
Hair needs one minute of thought. If yours is natural, wear it down: it is evidence. If it is dyed — even subtle highlights, which warm the hair more than people expect — bring photographs of your natural colour, and if you have gone grey, photographs of your pre-grey shade as well. Nothing about colour-treated or grey hair prevents an accurate analysis; it simply moves the weight of evidence onto your skin and eyes, and the photographs help carry it.
What you wear to the appointment does not matter. It will spend the session under a neutral cape. And you need to know precisely nothing about colour theory beforehand — arriving with no opinion is, if anything, an advantage.
In the room
The session happens in steady, neutral daylight, because daylight is the only light that tells the truth, and it proceeds through the three dimensions of your colouring in order: contrast level, then undertone, then chroma.
The instrument for all three is the drape — a fabric of precisely known colour, held at your collarbone while the practitioner watches what it does to your face. Not to the fabric; to you. The wrong drape casts shadows that were not there, flattens the skin, hollows the eyes. The right one returns light and structure. The differences range from startling to subtle, and the session is structured as a long elimination: warm against cool, deep against light, muted against vivid, each round narrowing the field of twelve seasons until one remains — and then confirming it, because a conclusion you have watched survive its rivals is worth more than one announced from authority.
You are in front of the mirror throughout. A good analysis is not performed on you; by the final drapes, most clients are calling the verdicts before the practitioner does. That moment — when you start seeing it yourself — is the actual product.
What you take home
Concretely: your season, and a palette of the colours that constitute it — along with the reasoning, which dimensions of your colouring drove the result, where your nearest sister seasons sit, and what to borrow from them. The useful afterlife of the session is everything that stops being a question: which neutrals are yours, which metals, what to tell your hair colourist, which end of your palette to spend on coats and knitwear and everything else that lives near your face.
The questions everyone asks
Can you be analysed with dyed or grey hair? Yes — see above; bring photographs. Does makeup really have to come off? Yes, all of it; the analysis needs your skin, not your skin's presentation. Will you be told you can never wear black again? No — you will be told precisely where black sits on your personal gradient from perfect to clashing, and what it costs you, and then it is your decision, made with open eyes. That is the whole temperament of the thing: it is a measurement, not a makeover. You arrive curious and leave calibrated.
Rebecca Sells is a certified colour practitioner and the founder of The Colour Doc, a personal colour analysis studio in Battersea, South London. She practised as a clinical medical doctor before opening the studio in 2025.
Further reading
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