The Box-Dye Client Who Wants Platinum
A 29-year-old client books a colour consultation ten days before her engagement party. Her natural depth is about level 4, but the mid-lengths and ends are level 2 from a box black dye applied eight months ago. There is 3 cm of regrowth. She wants a full head of platinum highlights. During consultation she mentions that one home colour caused itching and redness on her scalp and neck, which settled after two days; she did not have a patch test. Her hair feels dry and there is visible breakage at the crown. A strand test shows the hair stretches and does not spring back. She is going on holiday tomorrow and asks whether the colour can be done today.
1. What further information and tests do you need before making a professional decision?
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You need a structured hair and health history: every colour product used, including box dyes, henna or metallic salts; the date of the last application; whether a patch test was ever done; the timing and symptoms of the reported reaction; any scalp condition, medication, pregnancy or allergy history. Ask about home heat styling, previous bleach and how the hair feels when wet.
Assess the hair visually and by touch: porosity, elasticity, density and the position of old colour. The strand test result - stretching without returning - indicates poor elasticity and structural damage, so a second strand test on several sections is needed. A patch test must be carried out at least 48 hours before any oxidative colour, even if the client believes she has been coloured before. The reported itching and redness is a red flag: if it was a true allergic reaction, colour should not proceed without medical advice. Record all findings.
2. Can the platinum service be carried out in one session today? Explain your reasoning and how you would communicate this to the client.
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No. Platinum requires lifting from level 4 to around level 10 while neutralising eight months of level 2 box dye. That is a large lift on hair that already has poor elasticity and breakage. Lightener on previously coloured hair creates overlap, further cuticle loss and risk of breakage at the crown. The reported reaction also means a patch test cannot be skipped, and a patch test cannot be read safely on the same day.
Explain the hair science in plain language: the cortex has already been weakened, and the strand test shows the bonds are not returning to normal. Offer a realistic plan: patch test today and a strand test, then a course of conditioning treatments, a trim, and a staged correction over several appointments, possibly using a colour remover rather than maximum lift. For the party, offer styling and a non-oxidative gloss only if the patch test is clear and the hair tolerates it. Do not promise platinum in one visit.
3. Outline the aftercare and record-keeping you would put in place, whether or not colour goes ahead.
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Record the consultation, the reported reaction, the patch-test result, the strand-test result and the advice given, including the client's decision. If colour is postponed, give written aftercare: sulphate-free shampoo, a moisturising mask weekly, heat protection, gentle detangling and regular trims. Advise her not to use box colour at home and to return for reassessment.
If a limited service is agreed after a negative patch test, give 48-hour aftercare advice: avoid washing for 48 hours, use pH-balanced products, avoid heat styling, and report any itching, burning or swelling immediately. Explain that a reaction can still occur even after a negative patch test. If the reaction history suggests a true allergy, refer her to her GP or a pharmacist before any future colour and do not apply oxidative dye.