A production team receives a formula and a jar of the lab sample. The percentages add up, but the instruction “mix until smooth” leaves them without a reproducible process. The jar shows the target appearance; it does not explain how the lab reached it.
The handover should identify the selected sample and describe the process used to make it.
Take one sample as the reference
In this fictional handover, lotion L-14 version 3 is the selected sample. The lab prepared it in vessel V-02, recorded the ingredient lots and addition order, and measured its properties using named methods. A previous version has a similar label but a different thickener level.
The production ticket must identify version 3. Keep the reference sample and its test reports identifiable too, so a later comparison does not accidentally use the earlier lotion.
Replace shorthand with process information
“Heat phase A” needs the lab’s recorded temperature and sequence. “Add slowly” needs an account of how the addition was made. “Mix until smooth” needs the equipment, settings, duration, and observation used in that experiment.
| Lab note | Information to bring to the handover |
|---|---|
| Mix at the recorded speed | Mixer head, vessel, working quantity, speed and duration |
| Add phase B slowly | Addition sequence, recorded timing and temperatures |
| Cool, then adjust | Cooling history, adjustment material, quantity and measurement method |
| Sample acceptable | Sample reference, results, methods and basis for acceptance |
The production team then needs to assess how those lab conditions relate to its equipment. Compare the mixer and vessel arrangements alongside the recorded speed.
Use the pilot to investigate the differences
Before the pilot, compare the laboratory setup with the proposed production setup. Discuss mixing, heating, cooling, ingredient addition, transfer, and filling. Mark the steps that need observation or measurement during the run.
For L-14, suppose the pilot team notices that a recorded cooling step takes longer in its vessel. Record the actual temperature history and assess the resulting samples against the agreed product criteria. Keep the actual timing beside the planned instruction and assess the difference.
FDA’s cosmetic GMP checklist connects manufacturing instructions with materials, processing, sampling, and adjustments. It is a reference for the records involved; it does not provide settings for L-14 or any other particular scale-up.
Attach the actual pilot instructions and sample results to the report. Identify deviations and any work needed before routine production.
