What to Include in a Cosmetic Product Brief for a Manufacturer

Why the brief decides the quality of everything that follows

A product brief is the specification a factory uses to decide whether it can make your product, how it would do it and roughly what it will cost. It is also the reference point both sides return to when a sample arrives and someone asks whether it is right.

From a sourcing perspective, a written brief does four jobs.

• **It makes quotes comparable.** If three factories receive the same document, differences in their answers reflect the factories, not three different conversations.
• **It reduces sample rounds.** The lab starts closer to the target when texture, actives and exclusions are defined.
• **It exposes capability.** How a factory responds, what it questions and what it ignores, tells you about its technical depth.
• **It protects you later.** An agreed brief, updated as decisions are made, is the basis for the product specification in your manufacturing agreement.

A brief does not need to be long. Two or three pages is typical. It needs to be specific where it matters and honest where you are undecided. Writing open to recommendation on preservative system is useful; leaving the section blank is not.

Before sending it, decide how much to disclose. Many buyers send a short version first, covering product type, markets and quantities, then share the full brief after a confidentiality agreement is signed. That is a reasonable sequence, and a professional factory will not object to it.

One more principle: the brief describes outcomes and constraints, not a full formula. Unless you employ a cosmetic chemist, dictating percentages for every ingredient usually leads to an unstable product or a polite refusal. State what the product must do, feel like and exclude, and let the factory's formulators propose how. If you are evaluating a skincare manufacturer in Thailand for the first time, their proposal against a clear brief is your best early evidence.

Block one: product definition and target user

Start with the plain facts of what you want made. This section should let a stranger picture the product on a shelf.

Include:

• **Product type and format.** Gel cleanser, oil-in-water day cream, water-based serum, leave-in hair mask, stick balm. Be as precise as you can.
• **Target user.** Age range, skin or hair type, main concern, and the climate where it will mostly be used. A moisturiser for humid Southeast Asian weather is a different formula from one for dry winters.
• **Position and price tier.** Mass, mid-range or premium. This sets realistic limits for ingredient and packaging cost without you needing to state a target price yet.
• **Texture and sensory targets.** Thickness, spreadability, absorption speed, finish, after-feel. Use comparisons: lighter than a typical night cream, non-sticky within a minute.
• **Appearance and scent.** Colour, transparency, fragrance direction or fragrance-free, and whether natural colour variation is acceptable.
• **Benchmarks.** Two or three market products with notes on what you want to match and what you want to improve. If possible, ship physical samples to the lab. Benchmarks are a reference for feel and performance, not a request to copy a formula.
• **Fill size and usage.** Volume or weight per unit, how often it is used and how long one unit should last.
• **Range context.** Whether this is a single product or the first of a line that should share scent, actives or packaging.

Common weaknesses in this block are adjectives without anchors, such as luxurious or clean, and silence about the user. A formulator can interpret luxurious a dozen ways; they can work with rich cushion on application, absorbs without residue, soft floral scent at low intensity.

If you are still choosing between formats, say so and ask for the factory's view. Their answer is another data point on how they approach product development.

Block two: formula requirements, claims and markets

This is the technical core of the brief, and the part that most affects feasibility and cost.

**Key ingredients.** List the actives or hero ingredients you want and why. If you have a target level, state it as a preference and ask the factory to confirm what is feasible and permitted. Mention any ingredient stories that matter to the brand, such as Thai botanicals.

**Exclusions.** Ingredients or categories you do not want: specific preservatives, sulfates, silicones, mineral oil, animal-derived materials, fragrance allergens. Be aware that each exclusion narrows options and can affect stability, feel and price. Rank them as essential or preferred.

**Standards and positioning.** Vegan, halal, natural-origin percentage, organic. Each has specific certification routes and documentary needs, so say which you actually intend to claim on pack rather than which sound appealing.

**Claims.** Write the statements you hope to make: hydrates for a stated period, suitable for sensitive skin, dermatologically tested. Claims drive testing requirements, and rules differ by country, so they need to be known before formulation starts.

**Target markets.** List every country where the product will be sold. Ingredient restrictions, labelling rules and notification or registration procedures vary, and a formula acceptable in one market may need changes for another. Ask the factory which markets they have supported before, and confirm requirements independently with the relevant authority or a regulatory adviser in each destination.

**Shelf life and storage expectations.** Your preferred shelf life and period after opening, with the understanding that these are confirmed through stability testing.

**Development route.** State whether you are open to an existing base formula with modifications or need a custom formula, and ask who will own the final formula in each case.

Red flag: a factory that accepts every active, exclusion and claim without a single question. Real formulation involves trade-offs, and a competent lab will raise them early.

Block three: packaging and artwork

Packaging decisions interact with the formula, the filling line and the budget, so they belong in the brief even if the design is unfinished.

Cover these points:

• **Primary pack type.** Jar, tube, pump bottle, dropper bottle, airless container, sachet. Include material preference such as glass, PET, PP or aluminium.
• **Supply responsibility.** Will the factory source packaging, or will you supply it? Buyer-supplied components need to arrive on time, in specification and with enough overage for line set-up and rejects. Ask what overage the factory expects.
• **Decoration.** Screen printing, hot stamping, labels, sleeves. Each has different set-up needs.
• **Secondary packaging.** Unit carton, inserts, shrink wrap, shipper carton configuration.
• **Functional needs.** Light protection, tamper evidence, child resistance if relevant, travel suitability, e-commerce drop resistance.
• **Sustainability preferences.** Recycled content, refill formats, mono-material packs. Flag these as essential or preferred.
• **Artwork status.** Whether you have final artwork, a draft or nothing yet, and who will prepare files. Ask for dielines and printing specifications from the supplier before design work starts.
• **Label content.** Languages required and any mandatory statements you already know of for your markets.
• **Coding.** Batch number and date format, barcode requirements.

Ask the factory to confirm compatibility testing between the formula and the chosen pack. Leakage, paneling, discolouration and pump failure are far cheaper to discover in testing than after delivery.

If you have not selected components, describe the look and function you want and request options. Factories usually have regular packaging vendors, and you can also source independently through trade shows or B2B directories such as THAIMOST (thaimost.com). Either way, apply your own supplier verification to packaging vendors as you would to the factory itself: samples, specifications and written terms before any deposit.

Block four: quantities, commercial terms and documents

This block lets the factory judge whether the project fits its lines and gives you quotes that can be compared line by line.

**Quantities.** State the first order quantity per SKU and a realistic view of repeat orders. The standard minimum for OEM production is 1,000 units per SKU. If you have several shades or scents, list each as its own SKU, because each one counts separately.

**Timing.** Give your desired launch window and any fixed dates such as a trade show. Ask the factory to lay out their own schedule for sampling, testing, packaging and production. Lead times depend on the product and current workload, and should be confirmed in the quotation rather than assumed.

**Quote structure.** Request a breakdown: development or sample fees, formula cost, packaging, filling and assembly, testing, registration support, and delivery terms. Ask which Incoterm the price is based on and how long the quote is valid.

**Documents you expect.** Typical requests include the ingredient list in INCI format, product specification, certificate of analysis per batch, safety data sheet, stability summary, and evidence of the factory's manufacturing licence and GMP certification. For export you may need a certificate of free sale or other documents required by the destination country. Ask which are standard and which carry a fee, and note that documents are generally provided per product once an order is in place.

**Quality terms.** Acceptance criteria, retained samples, how non-conforming goods are handled, and whether you or a third party may inspect before shipment.

**Intellectual property and confidentiality.** Formula ownership, exclusivity if any, and protection of your brand assets.

**Payment and delivery.** Deposit structure, balance timing, and who arranges freight.

Red flags in this block: reluctance to itemise the quote, vague answers about licences or certificates, and commitments on timing that are given before the factory has seen your packaging and claims.

How to evaluate the response and run the sample stage

Sending the brief is half the exercise. The other half is reading what comes back with a consistent method.

**Score the replies.** For each factory, note:

• Did they answer every section or only the easy parts?
• Did they ask clarifying questions that show technical understanding?
• Did they flag conflicts, such as an exclusion that affects stability or a claim that needs testing?
• Is the quote itemised and are the assumptions stated?
• Did they provide licence and certification evidence when asked?
• How quickly and clearly did they communicate?

**Define sample evaluation in advance.** Add a short section to the brief stating how samples will be judged: texture, absorption, scent, appearance, performance against benchmarks, and who signs off. Give feedback in writing against those criteria so each revision has a clear target. Keep a retained sample of every version, labelled with the lab reference.

**Update the brief.** When a decision changes, revise the document and share the new version. The final brief, the approved sample and the agreed specification should all describe the same product before production is booked.

**Compare routes.** You can run this process directly with factories, with help from a sourcing consultant, or through a managed OEM partner such as 5FINE (5fineglobal.com), which handles formulation and production through GMP-certified partner factories. The brief is equally necessary in each case; what changes is who coordinates the steps.

**Pre-send checklist:**

• product type, user and benchmarks defined
• key ingredients, exclusions and claims listed and ranked
• target markets named
• packaging type, supply responsibility and artwork status stated
• quantity per SKU and launch window given
• documents, quality terms and quote format requested
• sample evaluation criteria and decision-maker named

If any line is blank, either fill it or mark it as open for recommendation. A factory can work with an honest open question far better than with a gap.