If a product has not been stored properly, for example it has been left with the lid off for long periods of time, the product may ‘go off’ before either the best before date or the period after opening has passed.
It is easy to spot this as these products may be discoloured, smell different or look unusual (lumpy rather than smooth for example).
A Gallery and Further Exploration section is included for viewers who wish to learn more, directing them to related Smithsonian collections.
The Bibliography section records materials published on the subject.
Many purveyors of personal care and beauty products claim that their products not only beautify our bodies, they also improve or protect our health.