close-icon

R&D Formulation Services

Developing a new cosmetic or personal care product starts with turning an idea into a formulation that can be sampled, reviewed, tested and eventually manufactured at commercial scale.

For brands without an in-house formulation team, R&D support can help guide the product from an initial brief through formulation development and refinement.

At Delta, formulation is considered as part of the wider product development and manufacturing process. This means the requirements of future testing, scale-up and production can be considered while the product is still being developed.

What Are R&D Formulation Services?

R&D formulation services support the development of new cosmetic and personal care products, as well as the refinement of existing formulations.

A brand may come to the development team with a detailed product brief, an existing formulation or an early-stage product idea.

The formulation process then works through what the product needs to achieve, how it should feel and what needs to be considered before it can progress towards commercial manufacturing.

This may include:

  • Product concept and brief development
  • Ingredient selection
  • Formulation development
  • Lab samples and refinement
  • Relevant product testing
  • Scale-up and manufacturing preparation

The exact process will depend on the product and how far the brand has already progressed.

Starting With the Product Brief

A clear product brief gives the formulation team a starting point for development.

It may include:

  • Product type and format
  • Intended product benefits and claims
  • Ingredient preferences or exclusions
  • Desired texture and finish
  • Fragrance preferences
  • Packaging direction
  • Target cost
  • Intended market

Some brands arrive with very specific requirements. Others need more guidance to turn an initial idea into a workable brief.

Both can be valid starting points.

The important part is understanding what the finished product needs to achieve before formulation development begins.

From Brief to Lab Sample

Once the product direction is understood, the formulation team can begin developing the first version of the product.

Ingredient decisions are made as part of the complete formulation rather than one ingredient at a time. The team may need to consider factors such as the desired product experience, intended claims, ingredient compatibility, cost, availability and future manufacturing requirements.

An initial lab sample is then prepared for the brand to review.

Feedback may relate to areas such as:

  • Texture
  • Appearance
  • Fragrance
  • Spreadability
  • Absorption
  • Overall product feel

It is common for a formulation to go through several rounds of refinement before it is ready to move forward.

Clear feedback during this stage helps the formulation team understand what needs to change between samples.

Testing During Product Development

Testing can provide information about how a formulation is performing and whether further development work may be needed.

The testing program will depend on the individual product.

Where relevant, this may include:

  • Stability testing
  • Microbial testing
  • Preservative efficacy testing

Other product-specific testing may also be required depending on the formulation, intended use and regulatory pathway.

Testing should be considered as part of product development rather than treated as the final step before manufacturing.

If results show that further work is required, the formulation can be reviewed before the product progresses.

Considering Regulatory Requirements

Regulatory requirements can influence formulation decisions, particularly when a brand intends to sell in more than one market or is developing a product that may fall within a regulated category.

What needs to be considered will depend on the product, its ingredients, intended claims and where it will be sold.

Knowing the intended market early can help the formulation team consider requirements that may affect development.

Where specialist regulatory advice or market-specific submissions are required, these may need to be managed by the brand or an external regulatory specialist.

Moving From R&D to Manufacturing

A formulation developed at lab scale still needs to be transferred into a commercial manufacturing process.

Lab samples and commercial batches are produced at very different volumes and using different equipment.

Once the formulation reaches the appropriate stage, the manufacturing process can be developed and, where required, a pilot-scale batch may be used before commercial production.

Considering manufacturing requirements during formulation can make the transition from development to production more straightforward.

This is one of the advantages of working with a formulation and manufacturing partner rather than developing the formula separately from the business that will eventually produce it.

Why Work With a Formulation and Manufacturing Partner?

Product development involves more than creating a sample that looks and feels right.

The formulation also needs to progress through the relevant testing and be suitable for commercial manufacturing.

Having formulation and manufacturing teams connected within the same process means production requirements can be considered earlier.

For brands, this can also reduce the number of handovers between suppliers as the product moves from the initial concept through development and into manufacturing.

R&D and Formulation at Delta

Delta works with cosmetic and personal care brands from early formulation development through to commercial manufacturing.

Depending on the project, Delta can support:

  • Product brief and formulation development
  • Ingredient selection and formulation refinement
  • Lab samples
  • Stability testing
  • Microbial testing
  • Preservative efficacy testing
  • Scale-up where required
  • Commercial manufacturing, filling and packing

The development process will vary depending on the product, its requirements and how much work has already been completed before the project reaches Delta.

When Should a Brand Speak to a Formulation Partner?

Brands can involve a formulation partner at different stages.

Some begin the conversation with an early product idea. Others already have a detailed brief or an existing formulation they want to manufacture or refine.

Speaking with the development team before packaging, claims or launch dates are fully locked in can give the project more flexibility while the formulation is being developed.

The formulation team can then help identify what needs to be resolved early and what can continue to evolve as the product progresses.

Ready to Develop a Cosmetic or Personal Care Product?

Delta works with brands from formulation development through to commercial manufacturing.

Speak to Delta about your product idea, formulation requirements and the next steps towards manufacturing.

Speak to Delta

 

Product Stability Testing

Product stability testing helps manufacturers understand how cosmetics, personal care products and pharmaceuticals perform over time under defined storage conditions.

It provides information about changes in the formulation and whether further development work may be required. At Delta, stability testing forms part of the wider product development and manufacturing process, helping brands understand how their product performs over time.

What Is Product Stability Testing?

Product stability testing monitors how a product changes over time under defined storage conditions.

Depending on the product, this can include changes in its appearance, texture, formulation or microbiological results.

The goal is to assess whether the product continues to meet the specifications established for it during development.

Stability testing can provide information that supports shelf-life assessment, product specifications, relevant regulatory requirements and ongoing product development decisions.

Having a structured testing protocol provides a consistent way to monitor the product and record changes throughout the study.

Why Is Stability Testing Important?

A product may look and feel as expected when a lab sample is first developed, but the development team also needs to understand how it behaves over time.

Stability testing can help identify changes such as:

  • Separation
  • Changes in colour
  • Changes in texture or viscosity
  • Changes that fall outside the product’s defined specifications

The results provide information that can help determine whether the formulation is ready to continue through development or whether further review is required.

What Is Assessed During Stability Testing?

The characteristics assessed during a stability study will depend on the individual product and its requirements.

Physical Stability

Physical stability looks at changes that can be seen or measured in the product over time.

This may include changes in colour, texture or viscosity, as well as separation, sedimentation or crystallisation.

These observations help the development team understand whether the product is maintaining its intended physical characteristics throughout the study.

Chemical Stability

Where relevant, stability testing may include analytical testing to monitor specified active ingredients over time.

The testing required will depend on the product type, formulation and applicable requirements.

Microbiological Testing

Microbiological testing may also be included as part of the testing program where relevant to the product.

For some products, particularly water-based formulations, this may include:

  • Microbial testing
  • Preservative efficacy testing

The appropriate microbiological testing will depend on the formulation and product requirements.

How Stability Testing Works at Delta

At Delta, stability testing is planned around the individual product and its requirements.

Before testing begins, a stability protocol is prepared for the product. This sets out how long the study will run, the storage conditions being used, when samples will be assessed and what will be reviewed.

Having the protocol in place provides a consistent way to monitor the product throughout the testing period.

Temperature and Humidity Conditions

Products are stored under defined conditions during a stability study so changes can be monitored over time.

At Delta, a typical long-term stability condition is 30°C and 65% relative humidity (RH).

Other conditions may be used depending on the product and its requirements.

Samples are assessed at scheduled intervals throughout the study rather than being reviewed only at the beginning and end.

Stability Requirements Can Vary

There is no single stability testing program that applies to every product.

The requirements depend on the type of product, its formulation and the regulatory pathway that applies to it.

For pharmaceutical or therapeutic products, stability data may be required to support areas such as expiry dating, storage conditions and product registration.

Cosmetic and personal care products will have different considerations depending on the individual formulation and product requirements.

The stability program should therefore be developed around the product rather than applying the same testing approach to every formulation.

Reviewing Stability Results

Samples are assessed at scheduled points throughout the stability study and the results are recorded.

Depending on the product, this may include changes in relevant product specifications, pH or viscosity measurements, microbiological results and other observations made during the study.

The results are reviewed against the specifications established for the product.

If something falls outside those specifications, further review or development work may be required before the product progresses.

The purpose of this review is to understand how the product is performing over time and identify anything that may need further investigation.

When Does Stability Testing Happen?

Stability testing is considered as part of the wider product development process.

Once a formulation reaches an appropriate stage of development, the relevant stability study can begin.

Because stability studies take place over a defined period, brands should allow for testing within their overall product development timeline.

If results indicate that further formulation work is required, additional development and testing may also need to be considered.

For brands new to manufacturing, this is an important part of understanding the time between approving a lab sample and moving towards commercial production.

Stability Testing at Delta

Delta works with cosmetic, personal care and pharmaceutical products, with stability testing considered as part of the wider development and manufacturing process.

Depending on the product, Delta can support stability protocols developed around the product and its requirements, defined storage conditions, scheduled sample assessment and the recording and reporting of stability results.

This provides brands with information about how their product performs over time and whether anything needs to be reviewed before the next stage of development.

Do Brands Need to Understand the Science Behind Stability Testing?

Not in detail.

Brands do not need to know how to design a stability protocol or interpret every technical measurement before speaking with a manufacturer.

What is useful is understanding that stability testing takes time and provides information about how a product performs after the initial formulation stage.

The formulation, quality and manufacturing teams can then determine what needs to be assessed for the individual product.

For a brand, the important questions are usually much simpler: what testing does my product need, when does it happen and how does it fit into the overall development timeline?

Need Support With Product Stability Testing?

Delta works with cosmetic, personal care and pharmaceutical brands to develop stability testing programs suited to the product and its requirements.

Speak with Delta’s team about stability testing requirements for your product.

Contact Delta