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How Do We Switch Our Salon to a New Hair Colour Brand Without Losing Every Client's Formula?

A hair salon colour brand switch leaves old formulas useless and old stock on the shelf. We map formulas, run down old stock and track tests on the new line.

Updated 4 min readBy SpiderHunts Technologies

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Quick answer — TL;DR

Changing colour brand means years of client formulas written in the old brand's shades, a shelf of old stock to use up, and a patch test question for every colour client. We attach a proposed new-brand formula to each client for a colourist to approve, plan the run-down of old stock against upcoming bookings, and flag which clients your policy says need a fresh test on the new line.

The rep has made you an offer

You have decided to move the salon from one professional colour brand to another. Perhaps the new brand's terms are better, perhaps your team prefers the results, perhaps the old range is being discontinued. The education days are booked. The new stock arrives in three weeks.

Then the practical questions arrive. Every regular colour client has a formula in the old brand's numbers, some going back years. The colour room holds a lot of old stock, some of it opened. Your patch test policy may treat the new brand as a change that needs a new test. And your stylists will be converting formulas at the bowl, one client at a time, with the client in the chair.

Why brand changes are harder than they look

Shade numbers look similar between brands but do not line up exactly. A level and tone in one range may need a different mix in another, and the conversion is a colourist's judgement, not a lookup. Doing that judgement live, for every client, on the first visit after the switch is stressful and slow.

Old stock does not use itself up in an orderly way. Without knowing which clients are booked in the next few weeks and what they usually have, the salon either runs out of the old brand halfway through a client's visit or ends up with a drawer of shades nobody will use again.

And the patch test question is easy to lose. If your policy says a test on one brand does not cover another, every colour client suddenly needs checking, and the record of who has been tested on what is rarely clear enough to tell.

What an unplanned switch costs

ProblemEffect
Formulas converted live at the bowlLonger appointments, inconsistent results
Conversions not recorded wellNext visit starts from scratch again
Old stock not plannedStock wasted or run out mid-client
Test status unclear on the new brandColour appointments disrupted on the day
Team learning under pressureStress in the first weeks

How formulas convert and what your patch test policy requires are decisions for your colourists, the manufacturer's education team and your insurer. We give no colour or safety advice. We organise the work so those decisions are made calmly and recorded.

How we plan the switch

  1. We pull every client's most recent colour formula from your salon software or record cards into one list, grouped by the old shades they use.
  2. For each common old shade or mix, your senior colourists, with the new brand's education team if you wish, agree a starting conversion. That is applied to each client as a proposed new formula, marked as not yet approved.
  3. Before each colour client's first visit after the switch, their stylist sees the old formula, the proposed new one and the last result, and approves or edits it ahead of the day rather than at the bowl.
  4. We look at colour bookings for the coming weeks and the old shades those clients use, and produce a run-down plan: which old stock will be used, when the salon should move each client to the new brand, and what will be left over.
  5. Your patch test rule for a brand change is applied to every colour client, and those who need a test on the new line are flagged with a reminder to book one before their next colour.
  6. After each visit, the new formula and result are saved as the client's current formula, and the old brand history stays readable underneath.

If your salon software already holds structured colour cards, we work inside it. Where formulas are free text or on paper, we bring them into a structure first.

The first month on the new brand

Each morning, stylists look at tomorrow's colour clients and approve the proposed formulas, adjusting a few. Clients who need a test on the new line had a reminder a fortnight ago and most have been in for it. The old brand is used up on the clients booked in the first weeks, and what remains is known in advance rather than found in a drawer in the spring.

  • Every client with a checked formula in the new brand
  • Conversions decided before the day, not at the bowl
  • Old stock used up to a plan
  • Patch test status clear for the new line

When the next brand review comes round, the salon has clean, structured formulas, which makes any future change far easier.

Signs your brand change needs a plan

  • You are changing colour brand and formulas are in the old brand's numbers.
  • Stylists expect to convert formulas at the bowl.
  • Nobody has worked out how the old stock will be used.
  • Your patch test records do not say which brand was tested.
  • Formulas are spread across notes, cards and phones.

FAQ

Frequently asked questions

The questions readers ask us after this guide.

Still have a question?

Ask us directly — a senior engineer will get back to you.

Ask about your project

Do you convert the formulas for us?

No. Your colourists decide conversions, with the manufacturer's education support if you use it. We apply their starting conversions and record each approval.

Can we run both brands for a while?

Yes. Many salons do. Each formula records which brand it uses, and stock is tracked separately for each.

What about clients with very old formulas?

They are flagged for a full consultation rather than given a proposed conversion, as your team prefers.

Does this help with the patch test question?

It applies whatever rule your salon sets for a brand change and flags the clients it affects. The rule itself is yours.

What do you need from us?

Access to your salon software or formula records, the new brand's range list and your team's agreed starting conversions.

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