GUIDE / DEVELOPMENT / 05

How Formulation Development Actually Works

In this articleA product is not one ingredient.Development starts with the briefFormulation is a systemSurfactantsMore than “cleaning ingredients.”SolventsUseful, but not automatically better.PolymersSurface behaviour can be engineered.Silicones and surface modifiersAcids and alkalispH is one design parameter, not the whole product.Chelating agentsRheology modifiersViscosity is engineered.FragranceFragrance is a technical ingredient too.ColourPreservativesIngredient interactions matterDevelopment is iterativeV01TESTV02TESTV03TESTV04APPROVALOne change can affect several thingsPerformance and user experience are differentProduct cost is part of formulationScale matters during developmentManufacturing sequence mattersStability testingPackaging compatibilityApplication testingBenchmarking during developmentProduct development is trade-off managementCleaning vs material compatibilityFoam vs rinsingDurability vs applicationConcentration vs simplicityFragrance vs stabilityThis is why priorities matterFrom formulation to commercial productThe Infinitec approach1. DEFINE2. DEVELOP3. TEST4. REFINE5. APPROVE6. VALIDATE7. SCALE8. RELEASEWhat customers do not need to knowThe key principleHave a product concept?

A product is not one ingredient.

A finished car-care product is usually the result of many individual components working together.

Some create the main performance.

Others stabilize the formulation.

Some control viscosity.

Some influence wetting, foam, fragrance, surface behaviour, preservation or application.

And changing one component can affect several others.

That is why formulation development is not simply:

choose ingredients + mix them together.

It is a process of balancing technical, commercial and practical requirements.

Development starts with the brief

Before formulation begins, the developer needs to understand the target.

For example:

A shampoo might need to be:

  • pH neutral

  • highly lubricating

  • low residue

  • coating-safe

  • concentrated

  • strongly fragranced

  • easy to rinse

  • commercially viable

Each requirement influences formulation decisions.

The developer’s job is to build a system that satisfies the brief as a whole.

Not just one characteristic.

Formulation is a system

A product may contain several functional groups of ingredients.

Depending on the category, these can include:

  • surfactants

  • solvents

  • polymers

  • silicones

  • emulsifiers

  • chelating agents

  • rheology modifiers

  • acids or bases

  • corrosion inhibitors

  • preservatives

  • fragrances

  • dyes

  • functional additives

Not every product contains all of these.

The architecture depends on the application.

Surfactants

More than “cleaning ingredients.”

Surfactants are central to many cleaning products.

They can influence:

  • wetting

  • soil removal

  • emulsification

  • foam

  • rinsing

  • lubrication

  • residue

  • material compatibility

Different surfactants behave differently.

A formulation may combine several types to achieve the desired balance.

For example:

One surfactant may improve cleaning.

Another may improve foam.

Another may reduce residue.

The final result depends on the system.

Solvents

Useful, but not automatically better.

Solvents can support:

  • removal of oils

  • removal of adhesives or residues

  • wetting

  • evaporation

  • cleaning strength

  • dissolution of specific contaminants

But they can also influence:

  • odour

  • material compatibility

  • classification

  • VOC considerations

  • application behaviour

  • packaging compatibility

A stronger solvent system is not automatically a better product.

The right level depends on the use case.

Polymers

Surface behaviour can be engineered.

Polymers may be used to create or influence:

  • gloss

  • slickness

  • water behaviour

  • film formation

  • protection

  • adhesion

  • durability

  • anti-soiling properties

The type and concentration of polymer can significantly change user experience and performance.

But higher concentration does not always mean better results.

Too much may create:

  • residue

  • streaking

  • difficult wipe-off

  • instability

  • poor compatibility

Formulation is about balance.

Silicones and surface modifiers

In some products, silicones or related materials can influence:

  • gloss

  • slickness

  • hydrophobicity

  • spread

  • tactile feel

  • application

The relevant chemistry depends on:

  • target surface

  • desired finish

  • durability

  • formulation type

  • compatibility with other ingredients

There is no single “silicone effect.”

Different systems behave very differently.

Acids and alkalis

pH is one design parameter, not the whole product.

Acidic and alkaline chemistry can be useful in specific cleaning applications.

For example:

  • mineral deposits

  • road contamination

  • wheel contamination

  • industrial soils

But pH alone does not tell you how aggressive or effective a product is.

Performance also depends on:

  • concentration

  • buffering

  • surfactant system

  • solvents

  • contact time

  • temperature

  • substrate

  • dilution

A product with similar pH to another can behave very differently.

Chelating agents

These can help interact with:

  • minerals

  • metal ions

  • water hardness

  • deposits

They can improve:

  • cleaning

  • stability

  • rinsing

  • formulation robustness

Their role is often invisible to the user, but technically important.

Rheology modifiers

Viscosity is engineered.

Viscosity can influence:

  • spray behaviour

  • cling

  • dwell time

  • bottle choice

  • pumpability

  • filling

  • user perception

A product may need to be:

  • water-thin

  • slightly thickened

  • gel-like

  • shear-thinning

  • pumpable

The desired viscosity must work both for the user and in manufacturing.

A product that looks great in a sample bottle may become difficult to fill at production scale.

Fragrance

Fragrance is a technical ingredient too.

Fragrance affects much more than smell.

It can influence:

  • stability

  • clarity

  • colour

  • viscosity

  • surfactant behaviour

  • compatibility

A fragrance that works in one formulation may not behave the same way in another.

This is why “just add more fragrance” can create technical problems.

Colour

Colour may appear simple, but it can influence:

  • perception

  • stability

  • staining

  • packaging compatibility

  • brand identity

Very strong colour can create practical disadvantages.

For example:

  • staining cloths

  • staining porous surfaces

  • incompatibility with transparent packaging

  • visible colour changes over time

Colour should serve a purpose.

Preservatives

Water-based formulations may require preservation against microbial growth.

The preservative system depends on:

  • pH

  • composition

  • water activity

  • packaging

  • intended use

Preservation must work within the complete formulation.

It cannot always be added at the end without consequences.

Ingredient interactions matter

A formulation can become unstable even if every individual ingredient is stable on its own.

Problems can include:

  • separation

  • precipitation

  • cloudiness

  • viscosity changes

  • colour shifts

  • fragrance loss

  • sedimentation

  • incompatibility

This is why development involves repeated testing and adjustment.

The developer is not just selecting ingredients.

They are managing interactions.

Development is iterative

A typical development path may look like:

V01

Initial formulation concept.

↓

TEST

Performance, appearance, stability and application.

↓

V02

Adjust surfactant balance.

↓

TEST

↓

V03

Modify viscosity and fragrance.

↓

TEST

↓

V04

Improve warm-weather application.

↓

APPROVAL

The goal is not to create many versions.

The goal is to learn from each version.

One change can affect several things

For example:

Increasing viscosity may improve cling.

But it may also:

  • change spray behaviour

  • change filling speed

  • trap air

  • affect foam

  • influence stability

Increasing fragrance may improve user experience.

But it may also:

  • increase cloudiness

  • affect viscosity

  • change classification

  • destabilize the formulation

Increasing cleaning strength may improve performance.

But it may also:

  • reduce material compatibility

  • affect fragrance

  • influence classification

  • create more residue

This is why development should be systematic.

Performance and user experience are different

A technically strong product can still be commercially weak.

For example:

A wheel cleaner might remove contamination extremely well.

But if it:

  • smells unpleasant

  • dries too quickly

  • stains triggers

  • is difficult to rinse

  • feels harsh to use

customers may dislike it.

A good formulation must balance:

technical performance

and

user experience

Product cost is part of formulation

R&D does not happen in a vacuum.

A product may be technically excellent but commercially unrealistic.

The formulator may need to balance:

  • raw material cost

  • active concentration

  • packaging cost

  • production complexity

  • target purchase price

  • retail positioning

This often means finding the point where performance and economics make sense together.

Scale matters during development

A formulation that works perfectly at 500 grams may behave differently at 500 kilograms.

Potential differences include:

  • mixing time

  • addition order

  • temperature

  • shear

  • dissolution

  • aeration

  • viscosity

  • homogenization

For that reason, good development considers scale-up before the first production run.

Manufacturing sequence matters

The order in which ingredients are added can be critical.

For example:

Ingredient A may dissolve correctly only before ingredient B is added.

A fragrance may need to be pre-solubilized.

A thickener may need specific shear or hydration time.

Temperature may need to remain within a certain range.

The final production method becomes part of the product.

A formula without a reliable manufacturing process is incomplete.

Stability testing

A product that performs well today must still perform later.

Development may include evaluation under conditions such as:

  • room temperature

  • elevated temperature

  • cold storage

  • temperature cycling

  • light exposure

  • storage over time

The exact protocol depends on the product.

The purpose is to identify changes such as:

  • separation

  • colour shift

  • fragrance change

  • viscosity drift

  • sediment

  • packaging interaction

Packaging compatibility

The formulation and packaging must work together.

Potential issues can include:

  • trigger degradation

  • swelling

  • leakage

  • stress cracking

  • discolouration

  • panel deformation

  • liner incompatibility

  • pump failure

This is one reason packaging should be identified before the product is considered finished.

Application testing

Laboratory measurements alone do not always predict user experience.

A product may need to be tested:

  • on real vehicle surfaces

  • under different temperatures

  • with different towels

  • on different paints

  • on coated and uncoated surfaces

  • by different users

Application testing helps connect chemistry to reality.

Benchmarking during development

Competitor products can be useful reference points.

But the development team should compare specific attributes.

For example:

  • cleaning

  • gloss

  • slickness

  • foam

  • wipe-off

  • drying

  • fragrance

  • durability

  • residue

The goal is not to “copy the competitor.”

It is to understand the target.

Product development is trade-off management

Most formulations involve compromises.

For example:

Cleaning vs material compatibility

More aggressive chemistry can improve cleaning but may reduce suitability for sensitive surfaces.

Foam vs rinsing

High foam can improve user perception but may slow rinsing.

Durability vs application

Longer-lasting protection may require more complex application.

Concentration vs simplicity

Highly concentrated products can reduce cost per use but may increase dosing complexity.

Fragrance vs stability

Higher fragrance loads may improve sensory appeal but create formulation challenges.

There is rarely a perfect maximum for every variable.

The brief determines which compromises make sense.

This is why priorities matter

A strong development brief defines:

MUST HAVE

Non-negotiable.

SHOULD HAVE

Important.

NICE TO HAVE

Optional.

Without that hierarchy, the formulator has no way to resolve trade-offs intelligently.

From formulation to commercial product

A formulation is only one part of the final product.

Commercial readiness also requires:

  • stability

  • packaging compatibility

  • regulatory classification

  • documentation

  • manufacturing instructions

  • QC parameters

  • filling suitability

  • artwork

  • production release

That is the difference between:

a good laboratory sample

and

a market-ready product.

The Infinitec approach

At Infinitec, formulation development follows a structured path.

1. DEFINE

Understand the technical and commercial target.

2. DEVELOP

Create the initial formulation.

3. TEST

Evaluate performance and application.

4. REFINE

Modify relevant variables deliberately.

5. APPROVE

Reach technical development approval.

6. VALIDATE

Confirm stability, compatibility and manufacturability.

7. SCALE

Translate the laboratory method into production.

8. RELEASE

Establish the commercial product specification.

The goal is not just chemistry that works.

It is chemistry that can be produced, supported and sold reliably.

What customers do not need to know

You do not need to arrive with:

  • a raw material list

  • a finished formula

  • exact chemical architecture

  • technical processing instructions

That is the developer's job.

What you should know is:

  • what the product should do

  • who will use it

  • where it will be sold

  • which characteristics matter

  • what commercial constraints exist

From there, formulation can begin.

The key principle

A formulation should be judged by whether it solves the original problem.

Not by how complicated it is.

More ingredients do not automatically mean a better product.

Newer chemistry does not automatically mean a better product.

Higher concentration does not automatically mean better performance.

The right formulation is the one that achieves the required result reliably.

Have a product concept?

You do not need to know the chemistry.

Tell us what the product should achieve.

We can translate the requirement into a technical development brief.

Start a Project

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