GUIDE / DEVELOPMENT / 03

How to Write a Product Development Brief

In this article“Make it better” is not a technical specification.What is a product development brief?Why a good brief mattersStart with the commercial objectiveWho is the customer?Where will the product be sold?What position should it occupy?What price point does it need to support?Define the product roleDescribe the product in one sentenceDefine the intended applicationDefine the target surfacesUse benchmark products carefullyDefine performance requirementsPrioritize the requirementsMUST HAVESHOULD HAVENICE TO HAVEWhy prioritization mattersDefine physical characteristicsDefine concentration and dilutionDefine packaging constraintsDefine target marketsDefine desired claimsDefine commercial parametersDefine timingDefine what success looks likeA strong brief should answer 12 questions1. What is the product?2. Who is it for?3. Where will it be sold?4. How will it be used?5. What surfaces are involved?6. What should it do?7. Which benchmarks matter?8. What must be different?9. Which requirements are non-negotiable?10. What are the cost and volume targets?11. What packaging will be used?12. When does it need to launch?Example: weak briefExample: strong briefPRODUCTUSERMARKETPOSITIONINGAPPLICATIONTARGETBENCHMARKMATCHIMPROVEAVOIDMUST HAVESHOULD HAVENICE TO HAVEPACKAGINGTARGET RETAILINITIAL VOLUMETARGET LAUNCHDo not over-specify the chemistrySeparate requirements from preferencesAvoid moving targetsDevelopment freezeA simple Product Development Brief templatePROJECTPRODUCT PURPOSETARGET USERMARKETPOSITIONINGAPPLICATIONSURFACESBENCHMARKSPERFORMANCE TARGETSMUST HAVESHOULD HAVENICE TO HAVEPHYSICAL CHARACTERISTICSCOMMERCIAL TARGETPACKAGINGTARGET MARKETSCLAIMSTIMELINESUCCESS CRITERIAThe Infinitec approachReady to brief a product?

“Make it better” is not a technical specification.

A good product-development project begins with a clear brief.

Without one, development becomes subjective very quickly.

The customer says:

“It should feel more premium.”

The chemist hears:

“Change something.”

The next sample may be different.

But not necessarily better.

A development brief solves that problem.

It translates a commercial idea into a defined technical and practical target.

What is a product development brief?

A development brief is a document that describes:

  • what the product is

  • who it is for

  • how it should be used

  • what it should achieve

  • what characteristics matter most

  • which benchmarks are relevant

  • what the commercial limitations are

  • what should be considered a successful result

It does not need to contain a finished formulation.

That is the manufacturer's job.

But it should clearly define the destination.

Why a good brief matters

A strong brief helps:

Reduce unnecessary development rounds

Clear targets lead to more focused formulation work.

Improve feedback

Samples can be evaluated against agreed criteria.

Align commercial and technical teams

Sales, marketing, R&D and the customer work from the same objective.

Control project scope

New requests can be distinguished from the original brief.

Speed up approvals

A product is easier to approve when everyone knows what “finished” means.

Start with the commercial objective

Before discussing chemistry, define the business case.

Ask:

Who is the customer?

Consumer?

Enthusiast?

Professional detailer?

Dealer?

Retail customer?

Industrial user?

Where will the product be sold?

Direct-to-consumer?

Retail?

Marketplace?

Distribution?

Professional network?

OEM?

What position should it occupy?

Value?

Mainstream?

Premium?

Professional?

Specialist?

What price point does it need to support?

The technical target should make sense commercially.

A formulation intended for a €12 product and a formulation intended for a €60 product may require completely different decisions.

Define the product role

Every product should have a clear role in the range.

For example:

  • hero product

  • core product

  • maintenance product

  • support product

  • professional product

  • entry product

This helps determine how much differentiation and development effort is appropriate.

Describe the product in one sentence

If the product cannot be described clearly in one sentence, the brief is probably not ready.

For example:

A premium pH-neutral maintenance shampoo for coated vehicles, designed for high lubricity, low residue and a refined user experience.

That is much more useful than:

A really good shampoo.

Another example:

A professional wheel cleaner for frequent workshop use with strong contamination removal, controlled dwell behaviour and good material compatibility.

Again, clear enough to guide development.

Define the intended application

The same product category can behave very differently depending on how it is used.

Clarify:

  • ready to use or concentrate

  • spray, foam, pour or wipe

  • wet or dry surface

  • manual or machine application

  • indoor or outdoor

  • dwell time

  • rinse or wipe-off

  • professional or consumer use

  • required dilution

  • temperature or climate considerations

Application method can influence the formulation significantly.

Define the target surfaces

Do not assume “automotive surface” is specific enough.

Examples:

  • paint

  • coated paint

  • matte paint

  • glass

  • wheels

  • plastics

  • rubber

  • leather

  • textiles

  • metal

  • trim

  • mixed surfaces

The intended substrate can influence compatibility, chemistry and product claims.

Use benchmark products carefully

Benchmark products can be extremely useful.

But a benchmark is only helpful if you explain why it matters.

Do not just write:

“We like Product X.”

Instead define:

What should be matched?

For example:

  • application

  • slickness

  • foam

  • wipe-off

  • durability

What should be improved?

For example:

  • fragrance

  • residue

  • user experience

  • concentration

  • packaging compatibility

What should be avoided?

For example:

  • streaking

  • aggressive odour

  • excessive dwell sensitivity

  • difficult removal

The benchmark should clarify the target, not replace it.

Define performance requirements

This is where the brief becomes technically useful.

Potential attributes may include:

  • cleaning power

  • gloss

  • slickness

  • hydrophobicity

  • durability

  • wetting

  • foam

  • lubrication

  • residue

  • wipe-off

  • curing

  • chemical resistance

  • drying behaviour

  • finish

  • anti-static effect

  • water repellency

  • material compatibility

Not every product needs every parameter.

Choose only those that matter.

Prioritize the requirements

This is one of the most important parts of the brief.

Use three categories.

MUST HAVE

Non-negotiable.

If the product does not achieve this, the development has failed.

Examples:

  • must be pH neutral

  • must be coating-safe

  • must work at 1:500 dilution

  • must fit a certain packaging system

  • must meet a target cost ceiling

SHOULD HAVE

Important but with some flexibility.

Examples:

  • should have strong foam

  • should have a premium fragrance

  • should have high slickness

  • should reduce drying effort

NICE TO HAVE

Desirable if technically practical.

Examples:

  • specific colour

  • unusual visual effect

  • secondary fragrance note

  • additional marketing characteristic

This hierarchy prevents contradictions.

Why prioritization matters

Imagine a brief asking for:

  • maximum cleaning power

  • neutral pH

  • extremely gentle material compatibility

  • zero residue

  • lowest possible cost

  • very high concentration

  • premium fragrance

  • unrestricted surface compatibility

Each request sounds reasonable individually.

Together, they may conflict.

The developer needs to know what matters most.

Define physical characteristics

Relevant fields can include:

Appearance

Clear?

Opaque?

Pearlescent?

Coloured?

Colour

Specific target or open?

Fragrance

Direction:

  • citrus

  • clean

  • sweet

  • woody

  • neutral

  • technical

  • other

Intensity:

  • low

  • medium

  • strong

Viscosity

Low?

Medium?

Gel-like?

Sprayable?

Pumpable?

Foaming behaviour

Low?

Controlled?

High?

Dense?

Fast-breaking?

Define concentration and dilution

For concentrates, clarify:

  • intended dilution range

  • standard use dilution

  • maximum dilution

  • professional vs consumer use

  • dosing method

  • expected cost-per-use

A concentrate may look commercially attractive but can become difficult for users if dilution is too complex.

Define packaging constraints

Packaging should be part of the brief early.

Include:

  • pack size

  • bottle type

  • material

  • trigger or closure

  • pump

  • cap

  • label area

  • carton size

  • customer-supplied packaging

  • packaging still to be sourced

This matters because formulation properties can influence filling and compatibility.

Define target markets

The intended market can affect:

  • classification

  • labelling

  • documentation

  • language

  • product claims

  • UFI / PCN

  • packaging

  • transport

List the countries or regions as early as possible.

Do not wait until the product is finished to say:

“We also want to sell it in another market.”

Define desired claims

Possible claims might include:

  • pH neutral

  • coating safe

  • streak-free

  • solvent free

  • biodegradable

  • high gloss

  • long-lasting

  • anti-static

  • hydrophobic

  • silicone free

  • safe on specific surfaces

  • professional grade

Claims should be treated as development inputs, not just marketing copy added later.

Define commercial parameters

A technically excellent product can still fail commercially.

Include:

Target retail price

Target wholesale price

Target purchase price

Expected first order

Expected annual volume

Margin expectations where relevant

Required pack size

Intended channel

These numbers help ensure the product is being developed into a commercially realistic structure.

Define timing

A useful brief includes:

  • desired first sample

  • target technical approval

  • artwork deadline

  • production target

  • commercial launch date

  • fixed deadlines

If the project is tied to:

  • a trade fair

  • retailer listing

  • campaign

  • launch event

  • distributor meeting

say so early.

Timing changes development decisions.

Define what success looks like

This sounds obvious but is often missing.

Complete this sentence:

This project is successful if…

Examples:

…the product clearly outperforms our current benchmark on application and slickness while staying within the target cost.

Or:

…the formulation can be launched in our current packaging with no major operational changes and reaches the target retail price.

Or:

…professional detailers can achieve the required result faster than with the current system.

That gives the development team a commercial definition of success.

A strong brief should answer 12 questions

1. What is the product?

2. Who is it for?

3. Where will it be sold?

4. How will it be used?

5. What surfaces are involved?

6. What should it do?

7. Which benchmarks matter?

8. What must be different?

9. Which requirements are non-negotiable?

10. What are the cost and volume targets?

11. What packaging will be used?

12. When does it need to launch?

If those are clear, development usually becomes much more efficient.

Example: weak brief

We need a premium spray sealant. It should be better than Competitor X, smell good and be easy to use.

This leaves too many unanswered questions.

Better in what way?

For whom?

At what price?

How long should it last?

Wet or dry application?

What surfaces?

What packaging?

What market?

Example: strong brief

PRODUCT

Premium spray sealant

USER

Enthusiast and professional detailer

MARKET

EU

POSITIONING

Premium

APPLICATION

Dry application by trigger spray and microfiber

TARGET

Fast application with strong gloss and slickness

BENCHMARK

Competitor X

MATCH

Ease of application

IMPROVE

Slickness and water behaviour

AVOID

Streaking in warm conditions

MUST HAVE

  • easy wipe-off

  • coating compatibility

  • stable in proposed trigger bottle

  • acceptable for EU launch

SHOULD HAVE

  • strong gloss

  • premium fragrance

  • 3–6 month durability target

NICE TO HAVE

  • very low product usage per vehicle

PACKAGING

500 ml trigger bottle

TARGET RETAIL

€24.95

INITIAL VOLUME

5,000 units

TARGET LAUNCH

Q2 2027

Now the R&D team has something useful to work with.

Do not over-specify the chemistry

A good brief defines the result.

It does not need to dictate every ingredient.

Unless there is a valid reason, avoid telling the chemist:

  • which surfactants to use

  • which polymer to use

  • which solvent to use

  • which exact raw-material architecture to use

Instead define:

  • performance

  • restrictions

  • user experience

  • commercial target

  • regulatory constraints

Let the formulator solve the technical problem.

Separate requirements from preferences

Customers often mix these together.

For example:

“It must be blue.”

Does it really have to be blue?

Or would blue simply be nice?

That distinction matters.

Every “must” reduces development freedom.

Use strict requirements only where they are genuinely necessary.

Avoid moving targets

One of the biggest causes of slow development is changing the objective during sampling.

For example:

V1:

More cleaning power.

V2:

Actually make it gentler.

V3:

Could we make it cheaper?

V4:

Now make it more concentrated.

The product may never reach approval because the destination keeps changing.

If the brief changes materially, update the brief explicitly.

Do not quietly move the target.

Development freeze

Once a product reaches technical approval, there should be a clear point where the brief is considered satisfied.

After this stage:

  • formulation changes

  • fragrance changes

  • colour changes

  • concentration changes

  • packaging changes

may require additional work.

This is why formal approval matters.

A simple Product Development Brief template

Use the following structure.

PROJECT

Customer:

Project:

Product:

Project ID:

Development route:

PRODUCT PURPOSE

What should the product do?

TARGET USER

Who is it for?

MARKET

Where will it be sold?

POSITIONING

Value / Mainstream / Premium / Professional / Specialist

APPLICATION

How will it be used?

SURFACES

Where will it be used?

BENCHMARKS

Primary benchmark:

What should be matched?

What should improve?

What should be avoided?

PERFORMANCE TARGETS

Required technical characteristics:

MUST HAVE




SHOULD HAVE




NICE TO HAVE




PHYSICAL CHARACTERISTICS

Appearance:

Colour:

Fragrance:

Viscosity:

Foam:

COMMERCIAL TARGET

Retail price:

Purchase price:

Initial volume:

Annual volume:

PACKAGING

Container:

Pack size:

Closure:

Label:

TARGET MARKETS

Countries:

Languages:

CLAIMS

Desired claims:

TIMELINE

First sample:

Technical approval:

Production:

Launch:

SUCCESS CRITERIA

This project is successful if:




The Infinitec approach

At Infinitec, a proper development brief is the transition between:

“We have an idea.”

and

“We are ready to develop.”

It creates a shared target for:

  • customer

  • project management

  • R&D

  • quality

  • regulatory

  • production

The objective is not bureaucracy.

It is clarity.

Good briefs create better development.

Ready to brief a product?

Use our structured Product Development Brief to define your project.

Product development brief

Or start a project with Infinitec and we will help build the brief with you.

Start a Project

Continue reading:

Next: How to Use Benchmark Products Correctly

THE INFINITEC DEVELOPMENT FRAMEWORKSee how these decisions connect to development

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