Quick answer
Vetting a manufacturer looks complicated — certifications, checklists, red flags — but the starting point is simple: confirm the factory holds GMP 22716 (the ISO 22716 cosmetics GMP standard). Depending on the market you're exporting to, that alone is often enough. Korea has a stronger signal too — CGMP, the Korean MFDS certification. But here's what most guides miss: if you get lost in these details, you miss the point. Whether the factory subcontracts part of production, or how big it is, is not the real question. Vetting comes down to two things: did they give you a good formula, and is the manufacturing cost one you can run a business on long-term? As an independent K-beauty manufacturing advisor who has run 300+ products through Korean factories, here's how to see the essence instead of drowning in the checklist. (Certification requirements vary by country and change over time — confirm current rules with the MFDS and your manufacturer.)
Step one: does the factory hold GMP 22716?
There's no need to start with suspicion. The first — and most important — step is simply confirming the factory actually holds GMP 22716 (ISO 22716, the international good-manufacturing-practice standard for cosmetics). It's the basic evidence that a factory runs a defined quality system. And in practice, depending on your destination market's requirements, having GMP 22716 in place is often enough on its own to produce and export without trouble. For a first-time founder, this is where you begin — you don't need to over-investigate.
The Korean context: CGMP is a stronger signal (a bonus)
If you want to go one level deeper, there's one thing worth knowing. Korea has CGMP — a certification from the Korean Ministry of Food and Drug Safety (MFDS). Unlike a certificate that mainly exists on paper, CGMP requires passing an actual on-site factory inspection and is subject to periodic re-checks. Because of that, larger, well-established real factories often hold it — so when you see it, it's a strong positive signal. But it is not an absolute filter. Plenty of genuine, well-run factories don't carry CGMP. So treat it as a nice-to-have signal, not a pass/fail test.
What certifications don't tell you
A certificate never says "this factory is good at your category." Factories tend to be strong in specific categories — a maker with GMP 22716 may still have never produced a sunscreen, a high-concentration ampoule, or your particular texture. So check the things a certificate can't show: which categories they've actually produced, which packaging formats they've filled, and the production scale they typically handle. Communication is the same kind of signal — if answers are slow and inconsistent during the sales stage, they won't get better in production. (More on that in how to choose a Korean cosmetics manufacturer.)
The subcontracting myth
Many guides tell you to be suspicious if a factory subcontracts part of production. From the inside, that's the wrong advice. Subcontracting is common and completely normal — it happens at the #1 manufacturer in the industry and at the smallest workshop alike. No single factory can own every process and every formulation type in-house, so handing a specific step to a specialist is simply how the industry works. It's also easy to assume subcontracting adds some extra cost on top of your manufacturing price — but that's not how it plays out, and in most cases you won't even be told which part goes where, nor could you find out. So focusing on "do they subcontract?" misses the point entirely.
In fact, a factory that subcontracts can often give you a better deal, not a worse one — because the trust and volume it has built in the industry let it structure a more reasonable cost than a smaller shop doing everything alone, or hand you a genuinely stronger formula. What matters isn't who performed which step. It's the result.
The essence: it comes down to two questions
Strip away the certificates, the checklist, and the red flags, and vetting reduces to two questions:
- Did they develop a genuinely good formula for you? One that fits your customer and your market — not just a competent base.
- Is the manufacturing cost one you can run a business on for the long term? Here, "reasonable" doesn't mean "cheap." It means a cost you can sustainably operate on — because manufacturing cost is a fixed cost you can't reduce later. Get it wrong at the start and the whole business becomes hard to sustain, no matter how well everything else goes.
This is exactly why subcontracting and factory size don't decide the outcome. A factory that outsources a step can still deliver a great product at a cost you can build a business on — and a fully in-house factory can hand you a mediocre formula at a price that quietly kills your margin. Every certificate, checklist, and red flag is ultimately just a tool for answering these two questions. Keep your eyes on the result — a good product at a sustainable cost.
Why this is hard to judge alone — and where we help
Here's the catch: those two questions are exactly the hardest ones for a first-time founder to answer. Is the formula you received actually good? Is the cost you were quoted one you can sustain? Without a basis for comparison, you can't really tell — and almost all the information you have came from the factory itself. That's the gap an independent review fills. We're not paid to place you into any factory, platform, or deal — so the read is on your side: whether the product and the cost you were given are genuinely good and genuinely sustainable.
Related reading: How to choose a Korean cosmetics manufacturer, how to audit a Korean manufacturing quote, and OEM vs ODM and getting the right formula.
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FAQ
How do I vet a cosmetics manufacturer?
Start by confirming they hold GMP 22716 (ISO 22716) — often enough on its own depending on your market. Then look past the certificate to the essence: did they give you a genuinely good formula, and is the manufacturing cost one you can sustain long-term?
Is GMP 22716 enough?
Often, yes — depending on your destination market's requirements. In Korea, CGMP (an MFDS certification involving on-site inspection) is a stronger signal, but its absence doesn't mean a factory isn't legitimate; many real factories don't carry it.
What is CGMP and why does it matter?
CGMP is a Korean MFDS certification that requires passing an actual factory inspection and periodic re-checks, so larger established factories often hold it. It's a strong positive signal when present — but not an absolute pass/fail filter.
Should I avoid a factory that subcontracts part of production?
No. Subcontracting is normal and happens at the largest and smallest factories alike. It usually isn't disclosed and rarely adds cost the way people assume. What matters is the result — a good product at a sustainable cost — not who performed each step. A factory that subcontracts can even offer better cost or a stronger formula thanks to its volume and industry relationships.
What does a "reasonable" manufacturing cost mean?
Not simply cheap — a cost you can run the business on for the long term. Manufacturing cost is a fixed cost you can't reduce later, so if it's set too high at the start, the business becomes hard to sustain no matter what else goes right.
Can an independent advisor review my manufacturer?
Yes. An independent advisor can give a buyer-side read on whether the formula you received is genuinely good and whether the cost you were quoted is sustainable — the two things hardest to judge on your own.
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