The eight-week henna client who wants blonde
Client, 34, has applied a 'henna-based' box colour every six weeks for two years; her last application was eight weeks ago. Her natural depth is a level 5, but mid-lengths and ends read as a level 3 with a faint greenish cast under the salon's daylight lamp. She wants a full-head level 7 golden blonde in one three-hour appointment, ten days before her sister's wedding, and her budget is €100. The ends feel slightly rough. An elasticity test on five wet strands stretches and returns, but two strands snap. She has a small healed scratch at the nape, and the salon has a 48-hour patch-test policy but no record of a test for her. The salon stocks 20 and 30 volume developer, clay lightener and a colour remover.
1. What tests and information would you gather before any lightening product touches her hair, and what is the reasoning behind each?
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I would complete a full consultation and record it. First, a patch test 48 hours before, even though she has had box colour: salon products contain different allergens, including PPD/PTD and ammonium persulfate in lightener, and her scratched nape is a route for sensitisation. Second, a strand test on a hidden section, because henna-type products may contain metallic salts or compound dyes that can react with peroxide or bleach, causing heat, breakage or unpredictable lift. Third, porosity and elasticity: two snapping strands out of five point to some mid-length and end damage, so I need to know how much stress the hair will tolerate. Fourth, check for overlapping colour bands under daylight and ask about allergies, medication and pregnancy. The greenish cast suggests a cool pigment deposit that may not lift cleanly. If the strand test indicates metallic salts, I would not proceed with bleach. I would not rely on the box label or the client's description. The purpose of these tests is to avoid a chemical burn, an unpredictable result and an insurance problem; they determine whether to proceed at all, not just how to mix the product.
2. Assume the strand test shows no metallic reaction but lift stalls at a warm level 5 after 30 minutes. How would you structure the appointment, and what would you tell the client about result, cost and timing?
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I would not promise a level 7 in one session. The strand test is the evidence: if lift stalls at level 5, the hair is telling me that further lightening today risks breakage and an uneven result. I would explain that the henna-type deposit and the existing darker ends limit what can be achieved safely in three hours. I would offer a realistic plan: a colour-balancing gloss or low-level lift to neutralise the green and blend the ends before the wedding, then two separate lightening sessions four to six weeks apart with bond-building support and a trim. I would quote each stage honestly; a multi-session correction is unlikely to fit €100, so she needs to decide before any product is applied. I would also confirm the patch test was done 48 hours earlier and record her informed choice. If she insists on the full blonde today, I would decline the lightening rather than risk her hair or scalp. The key is to separate the wedding deadline from the technical limit: give her a safe, attractive option now and a route to the goal later.
3. What are the specific risks of proceeding with a full-head bleach in one session, and how would you document your decision?
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The risks are chemical and contractual. Chemically, metallic-salt residues can cause an exothermic reaction, scalp burns, hair melting or breakage; compromised elasticity means the mid-lengths may snap during rinsing or styling. The green cast may become more visible if the underlying pigment is exposed unevenly, and a scratched nape increases the risk of irritation or sensitisation. A full-head application also removes the option of a hidden test area once the product is on. Contractually, proceeding without a recorded patch test, strand test and informed consent could invalidate salon insurance and leave me personally exposed. I would document the consultation date, hair analysis, patch-test result, strand-test product and timings, the maximum lift achieved, photographs, the client's signature and her decision to accept a reduced service or decline. I would record what I advised about cost, maintenance and the wedding deadline. If she declines the safe option, I would note that no lightening service was carried out and why. Good records protect the client, the salon and me, and they make the professional judgement visible.