By Kawee Chong · Commercialisation & Sourcing · Published 18 May 2026
An OEM cosmetics contract is easy to sign and hard to unwind. Once a factory has your formula, your artwork files and a production schedule, switching partners mid-launch is expensive and slow — which is exactly why the due-diligence conversation belongs before the signature, not after the first bad batch. The right questions, asked plainly and answered with documentation rather than reassurance, separate manufacturers who can actually support a growing brand from those who simply say yes to close the deal.
This guide sets out the questions experienced brand owners consistently ask before committing to a cosmetics manufacturer, grouped by the areas that tend to cause the most trouble later: compliance and quality, commercial terms, and day-to-day service.
Key takeaways
- Ask to see certification documents directly — GMP, ISO 22716, Halal where relevant — rather than accepting a verbal claim.
- Clarify formula ownership, MOQ and pricing tiers in writing before production planning begins.
- Confirm exactly what happens, contractually and financially, when a batch fails quality control.
- Notification support (NPRA in Malaysia, or the equivalent in your target market) should be discussed at the contract stage, not after the product is ready to ship.
Start with certification, not the sales pitch
Every serious cosmetics manufacturer should be able to produce current certification documents on request — typically GMP (Good Manufacturing Practice) and ISO 22716, the cosmetics-specific quality management standard, with Halal certification where relevant to your target market. Ask for copies, check the issue and expiry dates, and confirm the certificate covers the actual production line you will be using rather than the company in general.
A manufacturer that hesitates to share documentation, or offers to “arrange” certificates after the contract is signed, is telling you something important about how they operate. This should be one of the first questions asked, not a follow-up after commercial terms are agreed.
How is batch testing actually performed?
Ask specifically how the manufacturer tests each batch before release: what is checked, at what stage of production, and who signs off. A factory that can describe a defined testing protocol — pH, viscosity, microbial limits, appearance against a reference standard — is a different proposition from one that says testing “happens” without being able to describe the process.
Also ask whether test records are retained and available to you as the brand owner. Access to batch testing records matters if a customer complaint ever needs investigating months after the product shipped.
What does stability testing look like for your formula?
Stability testing confirms a formula holds up over its intended shelf life and under real storage conditions, and most cosmetic notification processes expect it to have been done. Ask how long stability testing takes for your product type, whether it is run in-house or outsourced, and whether it uses your actual production packaging rather than a generic container.
This is worth clarifying early because stability testing adds real time to a launch timeline. Manufacturers who skip or shortcut it may look faster on paper but leave you exposed to shelf-life problems after launch.
Traceability: can they show you the paper trail?
Ask how raw materials are tracked from goods receiving through to a specific finished batch. Good traceability means that if an issue is ever found in one batch, the manufacturer can identify exactly which raw material lots were used, which other batches used the same lots, and pull them if necessary. This is not a theoretical question — it is the difference between a contained, well-managed recall and a much larger one.
MOQ and lead time: get the real numbers
Minimum order quantity (MOQ) and lead time are usually quoted early in supplier conversations, but the numbers worth pressing on are the ones behind the headline figure: does the MOQ apply per SKU or per formula base, does it change with packaging complexity, and how does lead time shift if you need a custom shade, scent or fill volume rather than a stock option.
Ask for a lead time breakdown — raw material procurement, production, quality release, packing — rather than a single combined number. This makes it much easier to spot where a schedule is likely to slip if something goes wrong.
How does pricing change as volume grows?
Ask for the pricing structure across a few different order volumes, not just the quote for your first order. Understanding where price breaks happen helps you plan reorders and avoid a situation where scaling up unexpectedly erodes your margin because you didn’t know a better tier existed just above your typical order size.
It is also worth asking whether pricing is fixed for a period or subject to change with raw material costs, and how much notice you would get before a price change takes effect.
Who owns the formula?
Formula ownership is one of the most consequential and most commonly glossed-over terms in an OEM contract. If the manufacturer developed the formula for you, clarify in writing whether you own it outright, license it exclusively, or share it with other brands the manufacturer supplies. This directly affects whether you can move production to a different factory later without starting formulation from scratch.
Ask this question even if you do not plan to switch manufacturers soon — it is far easier to negotiate ownership terms before you are locked into a relationship than after.
Payment terms and what triggers them
Beyond the deposit percentage and balance due date, ask what specifically triggers each payment — order confirmation, start of production, quality release, or shipment. Ask how payment terms change for reorders once a working relationship is established, since many manufacturers offer better terms to repeat customers but will not volunteer this upfront.
Notification and registration support
If you are launching in Malaysia, your cosmetic product needs to be notified with the National Pharmaceutical Regulatory Agency (NPRA) before sale. Ask directly whether the manufacturer supports notification — providing the technical documentation, ingredient breakdown and safety information the notification process requires — or whether that work falls entirely on you. The same question applies to whichever market you are launching in; requirements and the responsible regulator vary by country.
Manufacturers experienced with export brands typically have a defined process for this. Ones focused only on domestic production may not, which is worth knowing before you assume the support will be there.
Packaging and artwork support
Ask what the manufacturer can support beyond the bulk product itself: sourcing packaging components, coordinating with your printer or designer, and managing artwork approval rounds before mass production. Some manufacturers offer this as a built-in service; others expect the brand to manage packaging entirely independently. Neither is wrong, but you need to know which model you are working with before you plan your launch timeline and internal resourcing.
What happens when a batch fails QC?
This is the question brand owners most often forget to ask — and the one that matters most when something goes wrong. Ask specifically: who bears the cost of a failed batch, what is the process for remaking it, and how much delay does a failure typically add to the schedule. A manufacturer with a clear, pre-agreed answer to this question is a manufacturer that has dealt with QC failures before and built a process around them, rather than treating each one as a one-off negotiation.
Putting the answers into the contract
Verbal reassurance on any of the above is not the same as a documented term. Where possible, get the substantive answers — formula ownership, pricing tiers, QC failure handling, notification support — written into the contract or a signed annex rather than left as an email exchange. This protects both sides and removes ambiguity if the relationship needs to be revisited later, whether that is a dispute, a volume renegotiation, or simply confirming what was agreed a year into the partnership.
Frequently asked questions
Should I ask these questions before or after requesting a quote?
Both have a place. Compliance and capability questions are worth asking early, before you invest time in a detailed quote, since they can rule a manufacturer out quickly. Commercial detail questions naturally follow once you have a quote to interrogate.
Is it reasonable to ask for references from other brands?
Yes, and most established manufacturers can provide at least general references or examples of brands they have worked with, subject to any confidentiality they owe existing clients.
What if a manufacturer won’t share certification documents?
Treat this as a serious warning sign rather than a formality to push past. Legitimate certifications are routinely shared with prospective clients as part of standard due diligence.
How long should I expect this due-diligence process to take?
It varies with product complexity, but a thorough round of these questions, plus document review, typically takes a few weeks before a contract is ready to sign — time well spent relative to the cost of unwinding a bad manufacturing relationship later.
About the author
Kawee Chong is a Singapore-based health, wellness and consumer-product business executive with extensive experience in commercialisation, international sales, sourcing and business growth. His career spans finance, product sourcing, distribution and the development of health and beauty businesses across Asian markets. LinkedIn
This article is provided for general information and does not constitute legal or regulatory advice. Always verify current certifications, terms and requirements directly with the manufacturer and relevant regulator.
See more in Regulation & Compliance, or read How to Select an OEM Cosmetics Manufacturer for the earlier stage of this decision.
