Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Total product cost
$28.10
Gross margin per service
$111.90
Gross margin %
79.9%
Product cost % of price
20.1%
Color tube cost
$21.00
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How to use this
- 1Enter color tube used (g).
- 2Enter cost per gram of color ($).
- 3Enter developer used (oz).
- 4Enter cost per oz developer ($).
- 5Enter toner / gloss cost ($).
- 6Enter foils, bowls, gloves, other supplies ($).
- 7Enter service price charged ($).
- 8Read your total product cost on the right — it updates as you type.
- 9Hit Share to keep the scenario or send it to someone.
About this calculator
Color is the highest-cost service category in most salons, and it's the one most often underpriced because owners price off competitor menus instead of actual product spend. This calculator breaks a color service into tube/bowl usage: grams of color, developer ratio, foil or bowl count, and toner, then converts that into a dollar cost using your wholesale price per ounce or per box. It compares that cost against your service price to show gross margin in dollars and percent. Most full-service colorists should be targeting 8-12% product cost as a share of the service price; anything above 15% usually means either overuse, under-pricing, or both. Run a full foil highlight and a single-process retouch side by side to see how differently they eat into margin.
Worked example
Using the values the calculator loads with:
Inputs
- Color tube used: 60 g
- Cost per gram of color: 0.35 $
- Developer used: 4 oz
- Cost per oz developer: 0.4 $
- Toner / gloss cost: 3.5 $
- Foils, bowls, gloves, other supplies: 2 $
- Service price charged: 140 $
Results
- Total product cost: $28.10
- Gross margin per service: $111.90
- Gross margin %: 79.9%
- Product cost % of price: 20.1%
- Color tube cost: $21.00
What each field means
Inputs
- Color tube used (g)
- The color tube used used in the calculation, measured in g. Starts at 60 g so you have a working example on load.
- Cost per gram of color ($)
- The cost per gram of color used in the calculation, measured in $. Starts at 0.35 $ so you have a working example on load.
- Developer used (oz)
- The developer used used in the calculation, measured in oz. Starts at 4 oz so you have a working example on load.
- Cost per oz developer ($)
- The cost per oz developer used in the calculation, measured in $. Starts at 0.4 $ so you have a working example on load.
- Toner / gloss cost ($)
- The toner / gloss cost used in the calculation, measured in $. Starts at 3.5 $ so you have a working example on load.
- Foils, bowls, gloves, other supplies ($)
- The foils, bowls, gloves, other supplies used in the calculation, measured in $. Starts at 2 $ so you have a working example on load.
- Service price charged ($)
- The service price charged used in the calculation, measured in $. Starts at 140 $ so you have a working example on load.
Results
- Total product cost
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Gross margin per service
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Gross margin %
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Product cost % of price
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Color tube cost
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
What's a healthy product cost percentage for color?
8-12% of the service price is standard for a well-run salon. If your product cost is running 15-20%, either your colorists are overusing product (common with inexperienced staff mixing more than needed), your pricing hasn't kept up with product cost inflation, or you're buying at bad wholesale terms.
How do I estimate grams of color used without weighing?
A full head of color on medium-length hair typically runs 60-90 grams total across all sections. Track a few services with a kitchen scale for two weeks to build real averages by service type rather than guessing, since guesses tend to run low and hide true cost.
Should retail product cost be included here?
No, this calculator is service-delivery cost only — the color, developer, and processing supplies used on the client. Retail product sold to clients to take home is a separate revenue and cost line and should be tracked with its own margin, typically 40-50% cost of goods.
Does buying in bulk change this much?
Yes, meaningfully. Cost per gram often drops 15-25% when buying by the liter or in case quantities versus single tubes, so a salon doing high color volume should renegotiate wholesale pricing annually rather than reordering the same SKUs by habit.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
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Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Hair Color Cost Per Service Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/hair-color-cost-per-service
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/hair-color-cost-per-service" target="_blank" rel="noopener">Hair Color Cost Per Service Calculator — RevenueLab</a> (2026).</p>
Source: [Hair Color Cost Per Service Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/hair-color-cost-per-service) (2026).