How to Choose a Contract Manufacturer: A Buyer's Checklist

Confirm four things before you request a quote: the manufacturer’s FDA registration status (and OTC monograph experience if your product is a drug), whether it runs your exact format in-house or sends it to a third party, its MOQ by format and component, and whether it can show you a sample before you commit to a production run. A manufacturer that can’t answer all four clearly in the first conversation is worth a harder look before you send a formula or brief.

What should you confirm before requesting a quote?

Start with regulatory status, not price. For personal care, ask whether the facility is FDA-registered and what cGMP standard it follows. For an OTC drug (sunscreen, acne treatments, and external analgesics all qualify), ask specifically about experience with the applicable OTC monograph and 21 CFR 210/211, since that’s a different compliance bar than cosmetics. Our OTC monograph explainer covers what that distinction actually requires from a manufacturer.

Then ask what “in-house” means at that facility. A sales team can quote almost any format; the question is which ones the plant actually fills without routing your order to a subcontractor. That matters for lead time, quality control, and who you call when something goes wrong.

Does the manufacturer actually run your format in-house?

Use this table to structure the conversation. A vague or deflected answer in any row is worth pressing on before you move forward.

What’s different when the product is regulated as a drug?

Sunscreen, acne treatments, and external analgesics are OTC drugs in the US, not cosmetics, even though they sit on the same store shelf as lotions and cleansers. Our OTC monograph explainer covers what that means for formulation and labeling; our OTC planning guide covers the manufacturing responsibilities to settle before you sign. If your product could fall into either category (a tinted moisturizer with SPF, for example), ask explicitly which regulatory path the manufacturer is quoting, since the documentation and timeline differ.

What should a sample and MOQ conversation actually cover?

Ask for MOQs broken out by format, not a single number for “your project.” A lotion MOQ and a continuous-spray MOQ from the same manufacturer can differ by format because the fill equipment and component minimums differ. Our packaging MOQ guide explains why component minimums and filling-run minimums are two different constraints that both apply.

When a sample arrives, compare it against a written brief, not a general impression. Record what matches, what doesn’t, and what’s a preference versus a requirement. Our sample-feedback guide has a format for that conversation so revisions stay specific instead of circular.

What questions separate a real manufacturing partner from a broker?

Ask who does the actual formulation work, whether that team is on staff or contracted out, and what happens to your formula and specifications if you ever need to move production elsewhere. A manufacturer that owns its formulation, filling, and compliance documentation under one roof can usually answer these directly; a broker typically can’t without checking with someone else first.

If you’re starting from an existing formula rather than a new one, ask what the transfer process looks like and what records the receiving manufacturer needs from you. Our formula-transfer guide has the handoff checklist.

InSpec Solutions is an FDA-registered contract manufacturer running BOV/continuous spray, sunscreen and other OTC topicals, tubes, hot-fill, and canister wipes in-house at one facility. Explore sunscreen manufacturing, turnkey manufacturing, or send your brief and we’ll tell you plainly which of these questions we’re the right fit to answer.