A lid doesn’t fit tightly. A dark moisture stain is visible on a cardboard box. A plastic bottle looks puffy even if the color seems intact. These clues don’t tell you everything about the item, but you should gather all available information about its condition.
The purpose of packaging includes holding the product, preventing its contamination or damage, providing the required support for storage and distribution, and presenting the information such as composition, net quantity, batch number, hazard notices, and the handling requirement on the label. Damage to the container, its seal, or other protective material will cause at least one function of the package to fail or not provide the expected level of performance.
Assess the seal and the closure. Make sure the cap fits flush, the lid is fastened properly, the tamper-evident ring is whole, or the adhesive edge didn’t lift up. Is there evidence of product that dried at the closure or a sticky area on the container? Are there holes or tears? Is there damage caused by someone opening the container and closing it again? Don’t just write that the condition of the package is bad. Write exactly what you see.
Check the shape of the package. A dented surface, crushed corner, swollen bottom, warped side, or collapsed portion may be caused by pressure, impacts, temperature differences, and other handling conditions. You cannot assume that the visual shape of the package corresponds to the way it became damaged. Note the location and extent of the visible shape change, and compare this to the shape of a good package for the same category of product.
As a practical exercise, gather three empty or previously opened packages made of different materials: for example, cardboard box, plastic tub, metal tin. Inspect the base, side, corner, closure, printed label, and inner lining (if it’s already open). Look for discoloration, scratches, corrosion, signs of wetness, seam failures, unreadable print, and any other signs that the package no longer has the shape it was designed to have.
Damage should be evaluated together with environmental conditions. Discoloration may mean the item was exposed to light for an extended period. Condensation and wet cardboard may indicate that the humidity was unsuitable. A leaking package or one that appears to be expanding requires more caution than a minor scratch on the cosmetic surface of a plastic lid. Review temperature and handling requirements and do not ignore them. Note, however, that your observation won’t allow you to determine the product condition inside the package, and it won’t replace the results of a professional inspection or other lab work.
The careful observer should keep a factual account of what part of the package is damaged, the type of damage that occurred, whether the seal is intact, and which information on the label is still legible. Stop before jumping to a conclusion about safety when there is insufficient data for a valid recommendation. The most important habit to develop at this point is not the ability to make an informed guess quickly; it is the ability to observe carefully, to describe the result accurately, and to know the point at which more information is required.