Packaging compatibility:
Compatibility with the packaging is developed independently to stability to avoid confusion between problem of stability of the formula and problem caused by inadequate packaging.
To assess the compatibility with the packaging, the cosmetic product is kept for a certain amount of time in controlled conditions, then specific characteristcs are evaluated, such as organoleptic changes, exudations, deformations, breackage, problems in packaging functionality and aspect, further microbiological and chemical stability of content.