Packaging in multiple layers
Many times cosmetic products are packaged in multiple layers. Whenever it is difficult to detect for the consumer, the number of units should be listed on the outer package, which should contain details about how to use the product and warnings on what to do if it is misused. It is essential that the product is protected from environmental elements such as mould and bacteria.
The packaging must be sufficient enough to protect the mechanical, thermal, biological and chemical properties of the product. It should also be strong enough to withstand human tampering and radiation damage.
FAD and EU regulations
The FDA oversees cosmetic packaging but does not test products. It leaves testing for safety up to manufacturers. It still provides regulations and can issue recalls when a product is associated with safety hazards. While the FDA does not have many restrictions on ingredients for cosmetic products, it does require that certain chemicals and colorants be listed.
As far as EU regulations regarding packaging, manufacturers must be compliant with EC No. 1223/2009. One of these requirements involves the manufacturer issuing a safety report before putting the product on the market. The manufacturer must also disclose any serious undesirable effects (SUE) to the EU. Marketers are required to list nano-materials. The EU's definition of "ingredients" does not include raw or technical materials used in production that do not end up in the final product. In some cases when durability is an issue, the manufacturer must list an expiration date after the product has been opened. The words "best used before" are common for identifying the product expiration date.
Standard ISO 22715 provides specifications for the packaging and labeling of all cosmetic products that are sold or distributed at no charge; i.e. free samples. National regulations dictate what products are to be regarded as cosmetics. While ISO 22715 is not legally binding, national regulations regarding cosmetic products can be even stricter than those laid out in ISO 22715. The link between standards and regulations is that a standard often represents the common denominator of national law, as the standardization committee consists of members of most countries.