Formula and packaging
The formulation is the keystone of the sensoriality and efficacy of a cosmetic product. Each formula is carefully studied to ensure an irreproachable quality to the user throughout the use of the product over time.
In order for a cosmetic product to retain all its sensory qualities and effectiveness over time, stability tests are carried out on each formula developed in the laboratory.
Each formula assay routinely undergoes different treatments such as passage in incubators at different temperatures (4°C, 20°C, 45°C), exposure to natural light, and even centrifugation. The formulation experts then evaluate the consistency of the formula (viscosity), its pH, color, odor and appearance under the microscope.
Thus, the slightest change during the stability test is recorded and the formula improved to obtain a high quality cosmetic.
The choice of packaging during the development of a cosmetic product is an important step. While packaging is primarily used to make it practical to apply the product, it can also be used to develop new application procedures, contribute to product microbial safety, and keep the sensory properties of the formula intact throughout the product’s life cycle.
For an innovative formula to provide the user with all its effectiveness and sensoriality, it is important to ensure its compatibility with the packaging.
Indeed, many interactions can take place between the content and the container, which can lead to a change in the quality of the formula such as a change in its texture, color or even its smell. On the other hand, a cosmetic product can also impact the packaging over time.
To avoid these phenomena, each validated formula is tested in the laboratory in the chosen packaging before being put on sale in order to verify that the latter will effectively protect the formula without modifying its stability and sensoriality, and that the packaging’s visual appearance will always be impeccable over time and during use.