A custom cosmetics formulation brief is the document that turns a brand concept into a practical development project. It gives our lab the information needed to assess format, ingredient direction, packaging compatibility, regulatory considerations, target cost and manufacturing route before prototype work begins.
The more specific the brief, the fewer assumptions are required during sampling and scale-up. For founders developing a first product and established teams expanding a range, these ten questions create a useful starting point for an efficient custom development process.
Why the formulation brief matters
A formulation brief is not simply a list of preferred ingredients. It is a commercial and technical instruction that helps align product positioning with what can be made consistently at the intended scale. A well-prepared brief allows our formulation team to identify potential constraints early, such as whether a chosen texture is suitable for the packaging, whether a fragrance direction fits the product category, or whether the required minimum order quantity supports the proposed component choice.
In custom cosmetics development, every decision affects another. A lightweight facial emulsion may require different emulsifiers and packaging from a rich balm. A water-based scalp tonic needs a different preservation approach from an anhydrous body oil. Clear direction at the beginning helps avoid repeated changes after samples have been prepared.
The top 10 questions for a custom cosmetics formulation brief
1. What product format do you want to create?
Start with the physical format: cream, lotion, gel, serum, cleansing gel, toner, oil, balm, mask, scrub, shampoo, conditioner, body wash, deodorant or another cosmetic format. State whether the product is leave-on or rinse-off, as this affects ingredient selection, preservation, viscosity and safety assessment requirements.
If you are undecided, describe the intended application experience instead. For example, you may want a facial product with a fluid, fast-spreading texture; a body product with a richer finish; or a hair product designed for easy dispensing through a pump. Our lab can then recommend suitable formulation formats.
2. Who is the intended user and where will the product be used?
Define the intended cosmetic use in practical terms: face, body, hands, lips, scalp or hair lengths. Include the broad user profile, climate or routine context where relevant, such as a product intended for frequent handwashing routines, a travel-focused range, or a lightweight summer body-care format.
This information helps guide sensory design, pack size and application method. It also helps ensure that the product presentation and instructions are appropriate for the intended cosmetic category.
3. What sensory profile should the formula have?
Sensory requirements are often decisive in whether a prototype feels aligned with a brand. Describe the desired viscosity, slip, spreadability, absorption feel, finish and residue level. Useful comparisons include phrases such as “milky and fluid,” “cushioning but not waxy,” “clear gel,” “dry-touch oil,” “dense cream” or “foam suitable for a pump dispenser.”
Also state what you want to avoid, such as a sticky finish, visible residue, a heavy wax feel, excessive foam or a thin, runny texture. These details give the formulator clearer boundaries than broad words such as “premium” or “luxurious.”
4. Which ingredients, ingredient stories or formulation directions matter to your brand?
List preferred ingredients by INCI name where possible, or by ingredient family and source when the final INCI is not yet known. For example, you might request humectants such as Glycerin or Sodium Hyaluronate, emollients such as Squalane, botanical oils, ceramides, peptides, niacinamide, caffeine, clays or biodegradable exfoliating particles.
It is equally important to identify ingredients that are essential to the product story versus those that are merely of interest. A long wish list can create incompatibilities, affect texture or increase raw-material cost, so the brief should prioritise what is genuinely central to the product concept.
5. Are there any ingredient exclusions or certification targets?
Explain whether the product must meet a defined market standard, retailer specification or certification pathway. Examples may include COSMOS-compatible ingredient sourcing, a fragrance-free direction, a formula developed without essential oils, or a specific allergen-management approach. Requirements should be framed around a documented standard or commercial need rather than generic marketing language.
Our team can review these requirements against available raw materials and the intended formula format. Final on-pack communication should always be reviewed for regulatory compliance and substantiated for the product placed on the market.
6. What appearance and fragrance direction do you want?
Specify whether the formula should be clear, translucent, white, naturally coloured, tinted or opaque. Include whether colour variation from botanical raw materials would be acceptable. Some ingredient choices can influence the final shade, odour and long-term appearance of a formula, particularly in products with a high level of plant oils or extracts.
For fragrance, describe the intended direction, such as citrus, herbal, floral, powdery, woody, fresh or unfragranced. If you have an existing fragrance reference, provide it during the development discussion. The fragrance must be compatible with the formula, product category and applicable labelling requirements.
7. Which packaging format will the product use?
Packaging should be discussed at the briefing stage, not after the formula has been finalised. Tell us whether you are considering a glass dropper bottle, airless pump, treatment pump, tube, jar, foamer, spray bottle, roll-on or other component. The package affects dispensing, consumer handling, formula protection and compatibility testing.
A low-viscosity serum may suit a pipette or pump, while a thick body butter may require a jar or wide-opening tube. Formulas containing sensitive materials may also benefit from packaging that limits repeated exposure to air and light. We can advise on the relationship between bulk viscosity and component performance during sample development.
8. What pack size, target market and label information are planned?
State the proposed fill size, sales territories and target launch channel. A 30 ml facial product, 50 ml airless treatment format and 250 ml body-care product each have different commercial expectations for pack cost and product usage. Target markets matter because the product information file, label content, responsible person arrangements and notification process must be planned for the territories where the cosmetic will be sold.
For EU placement, labels need to accommodate required information, including the INCI ingredient list, nominal content, period-after-opening or minimum durability information where applicable, precautions, batch identification and responsible-person details. Early artwork planning prevents last-minute space constraints.
9. What is the target price position and estimated order volume?
Provide a realistic target ex-works budget or retail positioning, together with your anticipated first order and annual forecast. Cost is shaped by formula complexity, raw materials, fragrance, packaging, decoration, filling method, testing requirements and order volume. A premium-positioned formula does not always require the most expensive raw materials, but it does require clear choices about where the budget should be allocated.
For many projects, our minimum order quantity is around 500 units per product, although the practical minimum can depend on packaging, filling format and component availability. Sharing volume expectations lets us recommend options that are commercially workable from the first production run.
10. What timeline, samples and approval process do you need?
Include the desired launch date, milestone dates and the people responsible for feedback and sign-off. Clarify whether you need an initial benchmark sample, several sensory variations, packaging trials or a formula based on a specified market reference. Development moves more smoothly when feedback is consolidated and supplied against agreed evaluation criteria.
Allow time for formula development, stability and compatibility work, safety assessment documentation, packaging procurement, artwork approval, production planning and filling. A launch date is useful, but a project schedule becomes more reliable when it includes decision points and sufficient time for any required reformulation.
Turn brand language into formulation instructions
Many briefs begin with broad language: “modern,” “minimal,” “botanical,” “high performance” or “spa-inspired.” These descriptors may be useful for brand identity, but they need translating into testable formulation instructions. For example, “minimal” may mean a short ingredient list, a restrained fragrance direction, simple packaging or all three. “Botanical” may refer to plant oils, botanical extracts, fragrance notes or a visual identity rather than a fixed formulation requirement.
Where possible, provide reference products and explain what you observe about them. Instead of saying that you want a product “like” another brand’s item, identify the individual characteristics you would like to explore: pumpability, fragrance intensity, foam structure, glide, finish, opacity or wash-off feel. This gives our lab room to develop an original formula rather than attempting to replicate a market product.
Key technical considerations by cosmetic format
Water-based formulas
Serums, gels, toners, emulsions, shampoos and body washes generally require a robust preservation strategy and appropriate stability evaluation. The brief should identify whether a clear formula is required, whether viscosity must remain low enough for a spray or pump, and whether the formula will contain ingredients that can affect colour or clarity over time.
Anhydrous formulas
Oils, balms, body butters and some stick formats contain little or no water, but they still need careful development. Oxidative stability, melting behaviour, crystal structure, fragrance compatibility and seasonal temperature exposure can all affect the finished product. A balm that feels ideal in a controlled sample room may require additional work to remain visually and physically consistent through transport and storage conditions.
Exfoliating and cleansing formats
For scrubs and cleansers, specify the desired exfoliant type, foam level, rinse-off character and packaging format. Particle size, suspension, texture and drainage all matter. If a formula is intended for a tube, the particle system must pass through the selected opening consistently without separating or blocking the component.
Build regulatory and manufacturing requirements into the brief
A formulation brief should record more than creative preferences. It should identify the markets where the product will be placed, the intended label language requirements, any retailer standards, and any required documentation. For EU cosmetic products, the final formula and product presentation must be evaluated within the framework of Regulation (EC) No 1223/2009 before market placement.
Ingredient availability and supply continuity should also be considered. An unusual extract or specialty active may be suitable for a small pilot project but have longer lead times or changing availability at production scale. Our lab reviews raw-material practicality alongside formulation fit, helping brands avoid building a launch plan around materials that may complicate repeat manufacturing.
- Provide the target sales countries and expected label languages.
- Identify retailer, distributor or certification specifications early.
- Confirm whether packaging is supplied by the brand, sourced by our team or still under review.
- State whether the project requires bulk manufacture only or filling into finished retail packs.
- Include anticipated reorder volumes, not only the initial order.
How to manage samples and feedback effectively
Sampling is where the brief becomes a physical formula. We normally recommend assessing prototypes against a short, agreed scorecard rather than collecting general comments alone. Review the visual appearance, fragrance, dispensing, initial spread, finish, rinse-off where relevant, and suitability for the proposed package. Record whether feedback relates to a must-change issue or a preference that could be balanced against cost, stability or manufacturing practicality.
Keep decision-making focused by appointing one person to consolidate feedback. Conflicting instructions from multiple stakeholders can lead to unnecessary rounds of development. If a formula changes substantially after approval, it may need further assessment before production, so internal sign-off is an important project milestone rather than an informal step.
Checklist
- Define the cosmetic format, application area and whether the product is leave-on or rinse-off.
- Describe the desired texture, viscosity, spreadability, finish and any sensory characteristics to avoid.
- Prioritise required ingredients and separate them from optional ingredient ideas.
- List documented certification goals, retailer requirements and ingredient restrictions.
- Specify colour, fragrance direction and whether natural variation is acceptable.
- Identify the preferred packaging component, fill size and dispensing method.
- Confirm sales territories, label languages and responsible-person planning.
- Share target price positioning, initial volume and expected reorder volume.
- Provide target launch timing, prototype deadlines and approval contacts.
- Prepare a simple sample scorecard for consolidated, comparable feedback.
Frequently Asked Questions
How detailed should a custom cosmetics formulation brief be?
It should be detailed enough to make the main commercial and technical choices clear, without attempting to prescribe every raw material. The most useful briefs define product format, sensory targets, essential ingredients, packaging, target market, budget direction and timeline.
Can I submit a reference product with my brief?
Yes. A reference product can help communicate texture, fragrance level, packaging behaviour or application experience. Explain which individual qualities are relevant to your project so the development work can focus on those characteristics while creating an original formula.
Should I choose packaging before the formula is developed?
It is preferable to identify a likely packaging direction early. The final formula and component should be assessed together because viscosity, dispensing, compatibility and fill volume all influence the finished product.
What happens if a preferred ingredient is not suitable for the formula?
Our team can explain the practical issue and discuss alternatives. The challenge may relate to solubility, colour, odour, stability, sourcing, cost, regulatory status or compatibility with other materials in the formula.
Can a brief include a target cost?
Yes, and it should. A target cost or retail positioning helps us propose realistic formula and packaging routes. It is most useful when accompanied by expected order volume and the elements that matter most to the brand.
How many sample rounds are usually needed?
The number depends on the complexity of the format and clarity of the original brief. A straightforward project with decisive feedback may require fewer iterations than a project involving multiple sensory targets, specialist packaging or evolving ingredient requirements.
Does a custom formula automatically meet EU cosmetic requirements?
Custom development is only one part of market preparation. Before an EU cosmetic product is placed on the market, the relevant safety, documentation, notification, labelling and responsible-person obligations must be addressed for the final product and its intended presentation.
A strong custom cosmetics formulation brief gives a development project a practical foundation. By making the format, sensory direction, packaging, commercial targets and compliance needs clear from the outset, brand owners can make faster decisions and reduce avoidable changes later in the process. Our lab can use that clarity to guide formulation, sampling and manufacturing planning around the requirements of your range.
Ready to develop this as your own private-label product? Request samples & pricing
Made By Nature Labs is a private-label and contract cosmetics manufacturer. Formulations and benefits described here are illustrative; final product claims, substantiation and regulatory compliance under EU Regulation (EC) No 1223/2009 are the responsibility of the brand owner placing the product on the market. Cosmetic products are intended for external use to cleanse, perfume, change the appearance of, protect or keep the body in good condition, and are not intended to treat, cure or prevent any disease.