GMP and Batch Testing
The standards that make every unit clean, consistent, and traceable, and the checks that clear each production run before it ships. How to make sure your manufacturer actually follows them.
Good manufacturing practice, or GMP, is the set of standards that make sure a product is made cleanly, consistently, and traceably every single time. Batch testing is checking each production run against its spec before it’s released. Together they’re how you keep every unit safe and identical, and how you contain a problem to one batch instead of your whole business.
What GMP covers
The international GMP standard for cosmetics is ISO 22716, which sets guidelines for the production, control, storage, and shipment of a product: clean facilities, documented procedures, trained staff, process control, and traceability from raw materials to finished units. It’s what separates a real manufacturer from a kitchen operation. MoCRA also requires the FDA to establish cosmetic GMP regulations, though that rule is still being written, so ISO 22716 is the standard to hold your manufacturer to now. Confirm your contract manufacturer works to it, because retailers will ask, and a non-compliant facility is a liability.
What batch testing checks
Before a batch ships, it’s tested against spec and documented in a batch record. That means microbial limits testing to confirm the run is within safe counts, and often physical checks like pH, viscosity, and fill weight to confirm it matches the approved formula. The batch code from fill and finish ties every unit to its run, so if a test later flags a problem, you can trace and recall just the affected batch. Testing every batch, not just the first, is what keeps unit number 50,000 as safe as the sample you approved.
Frequently Asked Questions
What is GMP in cosmetics?
GMP, good manufacturing practice, is a set of standards ensuring cosmetics are produced cleanly, consistently, and traceably. The international standard is ISO 22716, covering production, control, storage, and shipment. It includes clean facilities, documented procedures, process control, and traceability, and it’s what retailers and regulators expect a legitimate manufacturer to follow.
What is batch testing?
Batch testing is checking each production run against its specification before release, and recording the results in a batch record. It typically includes microbial limits testing and physical checks like pH, viscosity, and fill weight. Combined with a batch code, it lets you confirm every run is safe and on-spec, and trace or recall a single batch if something goes wrong.
Does MoCRA require GMP?
MoCRA directs the FDA to establish good manufacturing practice regulations for cosmetics, but that rule is still in progress. Until it’s final, ISO 22716 is the recognized GMP standard to hold your manufacturer to. Working with a GMP-compliant facility now also puts you ahead of the requirement once the FDA rule takes effect.
Sources
- ISO 22716:2007, “Cosmetics: Good Manufacturing Practices (GMP)”. The international GMP standard covering production, control, storage, and shipment.
- FDA, “Modernization of Cosmetics Regulation Act of 2022 (MoCRA)”. MoCRA’s requirement that the FDA establish cosmetic GMP regulations.