Cosmetic Manufacturing Contract Checklist: 6 Areas to Review

1. Scope and parties: who does what, exactly

The first page of any manufacturing agreement should answer a simple question: who is responsible for each step between an idea and a finished, packed unit? In cosmetics this is rarely obvious, because the work is often split between a formulator, a filling line, a packaging supplier and sometimes a trading or project-management company sitting between you and the plant.

Start by confirming the legal entities. The company named in the contract should be the one that issues invoices and holds the relevant manufacturing registrations. If an intermediary manages production through a **partner factory network**, that is a perfectly normal model, but the contract should say so and describe how responsibility flows between the parties.

Then map the scope line by line:

• Formula development or adaptation of an existing base
• Sourcing of raw materials and who approves suppliers
• Primary packaging (bottles, jars, tubes) and secondary packaging (boxes, inserts)
• Filling, labelling, batch coding and final packing
• Storage before collection and preparation of export documents

**Common mistake:** assuming packaging is included because the factory showed you packaging samples. Write it down. A short responsibility table attached as an annex is often clearer than paragraphs of legal text, and it gives both sides a shared reference when questions come up later.

2. Product specification and the approved sample

The specification is the technical heart of your contract. Without it, the factory is legally bound only to deliver something that loosely matches the product name, and that leaves a lot of room for disagreement.

A practical specification annex usually covers:

• The full ingredient list (INCI names) and, where agreed, the percentage ranges you have access to
• Physical parameters such as appearance, colour, odour, viscosity and pH range
• Microbiological limits and the test methods used to check them
• Fill weight or volume, with the tolerance accepted on each unit
• Packaging components by reference, including materials and decoration

Alongside the written specification, most buyers rely on a **retained approved sample**: a sealed, signed and dated unit kept by both sides. If a later batch looks or feels different, everyone compares against the same physical reference rather than memory.

What good looks like: the factory proposes the specification itself and is comfortable attaching its own test methods. A red flag is reluctance to put tolerances on paper, or a specification that describes only marketing claims rather than measurable properties. Also agree on how the specification can change. Ingredient substitutions, even minor ones, should require your written approval, because they can affect stability, labelling and registration in your destination market.

3. Formula ownership, confidentiality and intellectual property

Ownership of the formula is the clause buyers most often regret not reading carefully. There are broadly three situations, and the contract should state clearly which one applies.

• **Factory-owned base formula (typical ODM):** you choose from the manufacturer's existing library, perhaps with small adjustments. The factory usually keeps ownership, and you buy finished products. Portability to another manufacturer may be limited.
• **Custom formula developed for you:** the factory develops a formula to your brief. Ownership is negotiable, and terms vary widely, so it must be written down.
• **Brand-owned formula (typical OEM):** you bring your own formula and the factory produces it. The contract should confirm that the factory gains no rights to it.

Whichever model applies, check a few supporting clauses. A confidentiality or non-disclosure section should cover formulas, artwork, supplier details and commercial terms, and should continue after the agreement ends. Trademark and artwork ownership should sit clearly with the brand owner. If you expect to move production in the future, consider whether the full formula and raw material specifications will be handed over, and under what conditions.

This area is heavily dependent on local law and on how a court would read the wording, so it is exactly where a lawyer familiar with manufacturing agreements adds the most value.

4. Quality control, testing and batch release

A quality clause should describe a process, not just a promise. Ask the factory to walk you through what happens from raw material arrival to finished goods release, and then make sure the contract reflects that process.

Useful points to include:

• Incoming raw material and packaging checks, and who keeps the certificates of analysis
• In-process controls during mixing and filling
• Finished product testing against the specification, and the documents you receive per batch
• Retention samples: how many units are kept, for how long, and under what storage conditions
• Your right to inspect or audit, either yourself or through a third-party inspector, with reasonable notice

The contract should also define what happens when a batch does not meet specification. Typical options include rework where technically appropriate, replacement, or credit, and the agreement should say who decides and how the cost is handled. Agree on an inspection window after delivery during which defects can be raised, and on how hidden defects discovered later are treated.

If the factory works under a recognised GMP framework, it should already have written procedures for deviations and corrective actions. Ask to see the outline of those procedures. A manufacturer that can explain its deviation handling calmly and specifically is usually easier to work with than one that insists problems never happen.

5. Orders, forecasts, changes and packaging stock

The commercial section governs the day-to-day rhythm of the relationship. It should explain how orders are placed, confirmed and scheduled, without forcing either side into commitments that do not match reality.

Points buyers commonly clarify:

• **Purchase order process:** what a valid order contains and how the factory confirms it in writing
• **Forecasts:** whether forecasts are indicative or binding, and how far ahead they are shared
• **Lead times:** rather than fixed numbers in a master agreement, many buyers prefer that timing is confirmed per order, based on materials and capacity at the time
• **Change requests:** how artwork, packaging or formula changes are requested, approved and costed
• **Packaging and material stock:** who owns branded packaging bought for you, and what happens to leftover printed components if a design changes or the relationship ends

The last point causes more friction than buyers expect. Printed boxes and labels have little value to anyone except your brand, so the contract should state how such stock is handled before you approve large print runs.

Price and payment terms usually sit in a separate quotation or price schedule rather than in the body of the agreement. Make sure the contract explains how that schedule can be updated, for example when raw material costs change, and how much notice each side gives.

6. Regulatory roles, liability and how the agreement ends

Cosmetic regulations differ by destination market, and responsibilities are often split between the manufacturer, the brand owner and an importer or responsible person in the selling country. The contract should state who prepares which documents rather than assuming the factory handles everything.

Typical items to allocate:

• Product information and technical documentation needed for notification or registration
• Label content review against destination requirements
• Export documents such as commercial invoices, packing lists and certificates where available
• Handling of complaints, adverse reactions and recalls

Treat any regulatory statement in this checklist as general reference only. Requirements change and vary by country, so check them with the relevant authority or your customs broker in each market you plan to sell in.

Liability and insurance clauses define who carries the risk if something goes wrong, and they should be reviewed by a lawyer, ideally one familiar with both Thai law and the law chosen in the contract. Finally, read the exit terms: notice period, handling of open orders, return of confidential information, and transfer of moulds, artwork or formula files where agreed. Buyers using **global sourcing** across several countries often standardise these exit terms so that moving production is orderly rather than stressful.