How to calculate the cost of one colour service?

Why is it worth knowing the cost of one colour service?

Knowing the actual cost helps you make decisions based on data, not only on the price shown in the price list. It makes it easier to:

• set prices,
• control margin,
• reduce waste,
• compare service profitability.

Where should you start calculating the cost of a colour service?

To calculate the cost of a colour service in a salon, include materials, actual product usage, working time, the cost of running the station and other costs related to the service.

If you want to calculate the cost of a colour service in a salon, start with one specific service and follow it from start to finish.

The goal is not to create a perfect model that fits every appointment. It is to establish how much the salon actually spends to deliver this particular service.

As a first step, collect:

• the products used during the colour service,
• the actual amount of each product,
• the working time of everyone involved,
• supporting materials,
• the cost of running the station,
• any additional product usage,
• discounts or other price reductions,
• the cost of corrections when they are provided free of charge.

This set of data takes you from the general idea of a “colour service” to the cost of a specific service. That is the right foundation for the rest of the calculation.

1. Count the products used during the colour service

This is the most obvious part of the calculation, but also the one where it is easiest to create an oversimplified model. Material cost may include:

• colour,
• toner,
• lightener,
• oxidant,
• bonders and boosters,
• technical products,
• shampoo,
• conditioner or mask,
• preparation products,
• finishing products,
• gloves,
• foil,
• meche,
• papers,
• disposable capes,
• paper towels,
• neck strips,
• disinfectants and station-cleaning products.

Not every item needs to be accounted for down to one individual piece. For supporting materials, you can use an average cost for a given service category.

The important point is different: products should be counted according to actual usage, not the price of the package.

If a tube costs 30 zł and contains 60 g, one gram costs: 30 zł ÷ 60 g = 0.50 zł.

If 43 g were used during the colour service, the colour cost is: 43 g × 0.50 zł = 21.50 zł.

Not 30 zł. It is a simple example, but this is the basis of a material-cost calculation.

What about oxidant?

Exactly the same approach applies. If one litre of oxidant costs 40 zł and the service uses 60 ml, the cost of the product used is: 40 zł ÷ 1,000 ml × 60 ml = 2.40 zł.

With many products, these calculations become time-consuming. It is therefore useful to calculate the unit cost of every product once: purchase price ÷ package weight or volume = cost of 1 g or 1 ml.

Then you only need to multiply that value by the actual usage.

With a larger number of services, it is also worth comparing this data with inventory levels. This shows whether actual product usage matches the usage implied by completed services.

2. Do not calculate product cost from the formula alone

This is where a spreadsheet calculation starts to differ from the real cost of a service.

The formula may say: 40 g of colour + 40 g of oxidant.

In practice, the scale may have shown: 43 g of colour + 40 g of oxidant.

Three grams may seem insignificant for one service, but the difference starts to matter when it happens across many colour services.

Klaudia, a colourist and Dosiq co-founder, points to exactly this kind of small deviation.

“With a 1:1 ratio, it is easy to slightly overpour the product and then record a rounded value. If three extra grams appear across 20 colour services, that is already 60 g of product — the equivalent of one 60 g tube.”

The goal is not to hold every colourist accountable for every gram. It is simpler: when pricing a service, you should know what actual usage looks like.

If the calculation assumes that every colour service runs perfectly, it may understate the cost.

3. Include working time

Time is the second major component of cost. Count more than the application itself. A service also includes:

• consultation,
• station preparation,
• mix preparation,
• application,
• washing,
• drying,
• cleaning the station,
• recording information after the service.

If an assistant also works on the service, that additional time should be included as well.

How do you calculate the cost of one working hour?

First establish the actual cost of employment or cooperation, then relate it to the number of hours that can realistically be used for paid services.

Take-home pay alone is not enough.

The calculation may also need to include employment costs, holidays, downtime and time that cannot be sold directly to clients.

For example, if the assumed cost of one working hour is 50 zł and the service takes 3 hours: 3 × 50 zł = 150 zł labour cost.

This is not yet the service price. It is only one part of the cost.

4. Calculate the cost of running a station

The salon incurs costs even when it is not buying another tube of colour. The calculation may include:

• rent,
• electricity,
• water,
• heating and air conditioning,
• towel washing,
• cleaning,
• cleaning products,
• booking system,
• software,
• card terminal and transaction fees,
• accounting,
• internet and phone,
• marketing,
• website,
• equipment depreciation,
• repairs and servicing,
• station equipment,
• insurance,
• reception,
• administrative costs,
• social-security contributions and other business costs.

There is no need to assign every złoty to one particular appointment. You can calculate an average hourly operating cost for the station or apply a properly calculated overhead rate.

The important thing is that this element appears in the calculation at all.

5. Remember VAT and the tax regime

The price shown on the menu is not always an amount that can be compared directly with costs.

The calculation needs to account for the business tax regime and VAT if the salon is VAT registered. The exact calculation depends on the business structure and method of taxation.

It is also worth deciding from the beginning whether the calculation will use net or gross amounts and applying the same rule to all costs and prices. This makes it possible to compare the cost of delivering the service correctly with the amount the salon actually receives.

6. Add costs that appear after the service

Some costs do not exist yet when the client pays for the service.

A free correction is a good example: assume a colour service was sold for 500 zł. The calculation looks healthy. A few days later, a free correction is necessary.

The salon pays again for:

• products,
• working time,
• use of the station.

There is no second payment from the client.

If the correction is not assigned to the original service, that first colour service will look more profitable than it really was.

This does not mean corrections should be treated as something bad. They are a natural part of salon work. It is simply important to know their cost and include it in the right places so you can see the real cost of a colour service. We discuss other easily missed costs in Where does money really disappear in colour services?.

7. A discount changes the result more than the percentage suggests

Assume a colour service costs 500 zł and the salon gives a 10% discount. The client pays 450 zł.

The price difference is 50 zł, but profitability depends on how much of the original 500 zł was available after costs.

If the delivery cost is 400 zł: 500 zł − 400 zł = 100 zł.

After the discount: 450 zł − 400 zł = 50 zł.

The price fell by 10%, but the amount left after costs fell by half.

A discount should therefore be part of the calculation, not a decision made beside it. You should know the minimum service price that still leaves the intended margin.

8. The old price is still a price

The menu can say one thing while actual revenue from a service says another.

Some long-term clients may still use old prices from before a price increase. That is fine as long as the profitability calculation uses the prices actually paid, rather than only the current menu price.

For example: new price: 500 zł; old price for some clients: 450 zł.

If the analysis uses only the 500 zł price, the result will be overstated.

Look not only at the official menu but also at how much the salon actually receives on average for a given service.

The same applies to periodic price updates. A service with a healthy margin two years ago may be much less profitable today if product prices, wages, rent or utilities have risen in the meantime.

9. Calculate the cost of one colour service with a concrete example

Once all the data has been collected, it can be brought together in one calculation. Assume that the colour service takes 3 hours. Let us use the following example values:

How should you read the cost structure of a colour service?

In this example, delivering the colour service costs the salon 285 zł.

If the service price is 500 zł, the amount left after the included costs is: 500 zł − 285 zł = 215 zł.

This is the amount left from the service price after covering the costs included in the calculation.

Remember that the result can only be as good as the data entered. If product cost is calculated from the formula but the salon regularly prepares a larger mix in practice, the real cost will be higher. The same applies to working time, corrections and discounts.

The calculation should therefore be based on data from real services, not assumptions alone.

The total service cost is only the beginning. It is also useful to see what makes up that cost.

An example model might look roughly like this:

• 20–25% — products,
• 30–45% — labour cost,
• around 5% — supporting materials and service,
• 15–20% — salon operating costs,
• 10–20% — the amount left after the included costs.

These are not fixed proportions that every colour service should meet. Every salon has a different cost structure, product prices, pay model and organisation of work. This breakdown can nevertheless help you quickly see which element has the greatest effect on a specific service.

If the product share is clearly higher, check actual usage and how mixes are prepared. If labour makes up a large share of the cost, look at the service time. If operating costs are significant, check how they have been assigned to individual services.

Think of these proportions as moving sliders. Changing one element affects the others. If product cost or working time grows, the amount left after costs becomes smaller at the same service price.

Instead of looking only at the price of a colour service, check what exactly makes up its cost and which element has the greatest effect on profitability.

10. Check the cost of one hour, not only one service

Two colour services can have a similar financial result while taking very different amounts of time.

Assume the following:

What does the hourly cost show?

In both cases, 200 zł remains after the included costs. Economically, however, these are not the same services: the first delivers 200 zł ÷ 2 h = 100 zł/h, while the second delivers 200 zł ÷ 3 h = 66.67 zł/h.

This shows that the amount left after costs is not enough to compare services. The time for which the station is occupied matters too.

When analysing profitability, check:

• how much remains after the cost of one service,
• how much of that amount is generated per hour of station time.

This makes it easier to compare services with different prices and delivery times.

11. The same service can have a different cost

In a salon with several people working, the same colour service can have a different delivery cost. Factors include:

• product usage,
• the number of mixes prepared,
• working time,
• additional service stages,
• the way work is organised.

When analysing the team, it is therefore worth looking not only at revenue but also at the cost and profitability of the services delivered.

Klaudia Warecka points out: “A team member generating 15,000 in revenue can be more profitable than someone generating 25,000, because they may deliver services with lower usage.”

This analysis is not an argument for creating one rigid standard for everyone on the team. People may work differently, and differences in usage or delivery time can have valid reasons.

If the differences are visible in the data and occur regularly, it is worth finding out why. Only then can you decide whether the salon needs a change in the way of working, additional support, training or simply acceptance of a difference caused by the type of service.

12. Do not price a service based only on competitors

Other salons’ prices can be a reference point, but they should not be the foundation of the entire calculation.

If a similar colour service costs 450–500 zł in the area, that does not mean every salon should set its price at 475 zł.

The costs may be completely different:

• different rent,
• different pay model,
• different products,
• different working time,
• different station occupancy,
• different level of fixed costs.

The same price can therefore provide a healthy margin for one salon and leave very little for another.

Klaudia Warecka points out that setting prices based on nearby salons is a common problem in service pricing. A salon manager can match the market without first checking whether that price covers the salon’s own costs and delivers the intended margin.

The market price tells you what clients pay for a similar service. Your own calculation shows what your salon should charge.

What is most often left out of the calculation?

If you had to name the elements that most often disappear from the calculation, start with these:

• actual product usage rather than the amount written in the formula,
• excess mix prepared,
• an additional mix during the service,
• free corrections,
• the actual cost of working time,
• the station’s share of operating costs,
• discounts,
• old prices for some clients,
• unused or discarded products,
• differences between recorded product usage and actual inventory levels,
• VAT and the tax regime,
• regular updates to the calculation.

Many of these costs may seem small on their own. With a larger number of services, however, they start to affect the real cost of a colour service.

It is therefore worth distinguishing between an assumed cost and an actual cost. The first comes from the formula and assumptions. The second shows how much the salon really spends to deliver the service.

An assumed cost can be calculated once. An actual cost should be checked regularly against data from completed services.

How much does a colour service cost? It depends on what exactly you count

There is no single universal answer to how much a colour service costs in a salon.

• Material cost may be low while the service takes a long time.
• Product usage may be high, but the price may account for it appropriately.
• A discount or a free correction may also appear.

That is why the question “how much does a colour service cost?” is not quite precise enough.

A better question is: “How much does it cost to deliver this specific colour service in my salon, with my costs and the way my team actually works?”

Only then can you assess whether the service price is right.

How do you start if you do not have this data yet?

You do not have to analyse the whole salon at once. As a first step, choose one service (for example, the colour service you deliver most often) and collect the following for a set period:

• products,
• weights,
• working time,
• additional mixes,
• leftovers after the service,
• corrections,
• the price actually paid by the client.

Then compare the assumed cost with the actual cost.

If the difference is small, the model probably describes the service well. If it is large, you have found an area worth analysing.

It could be the way the service is delivered, the price, product usage or assumptions about fixed costs.

You do not need to know immediately why the difference exists. First, you need to notice it.

What if manual calculations start taking too much time?

The most profitable salons measure product usage and analyse the cost of each service. This helps them identify faster where money is being lost.

In a small salon, some of these calculations can be managed in a spreadsheet. The problem starts when there are many services, products and people working with colour. Collecting every weight, assigning it to a specific service, comparing it with the formula and analysing the results later requires regular work.

Such data can be collected manually or with systems that automate cost analysis. Dosiq records products, grams and ratios while the mix is being prepared. After the service, you can mark whether the prepared amount was too little, just right or too much. At the next appointment, the data can serve as a reference point.

That matters because the greatest value is not the formula record itself. It is the data that can later be used to calculate the actual cost of the service.

If you want to see how this process works in practice, see how Dosiq works.

From calculation to decision

How can you increase margin on colour services? Calculating the service cost will not change the salon’s result by itself, but it gives owners and managers a concrete number on which to base their next decisions.

If material cost is higher than expected, you can investigate actual product usage. If working time makes up a large share of the cost, look at the length of the service. If discounts or old prices reduce the margin, calculate their effect on the result.

Knowing the cost of individual services also makes it easier to calculate the salon’s break-even point — the revenue level at which all costs are covered. This is especially important in months when the number of appointments falls. Instead of waiting until the end of the month to see whether the result adds up, you can establish in advance how many services, and at what prices, are needed to cover the salon’s costs.

This data also shows where differences really arise: product usage, working time, prices, discounts or operating costs. Only with that knowledge can you decide consciously what is worth changing.

You do not have to start by analysing the whole salon. Choose one colour service, calculate its actual cost and begin collecting data from the next services.

If you want to know what services really cost in your salon, start with the data created during every colour service. Dosiq helps collect it and turn it into information for decisions about prices, product usage and service profitability.

See how Dosiq helps control colour-service costs →.

All numerical examples in this article are hypothetical and are included to explain the mechanism.