A retailer reports that a lotion is separating on shelf. The complaint is logged against the product and batch, and the investigation opens with the batch record, raw material lots and stability data already attached.
The trace shows a change of emulsifier supplier two months earlier, and two other complaints for batches made since. A corrective action is raised to review the emulsifier specification, and a preventive action adds a check at incoming inspection. Willow drafts the customer response from the investigation notes, and quality approves it before it's sent.