Key answer
A useful stability plan links formula, array integrity, moisture, packaging, storage and claims to predefined decisions.
Define the sample and package
Test the representative finished product in the intended primary package. An open laboratory sample cannot establish packaged shelf life.
Track meaningful attributes
Appearance, odor, array integrity, moisture-related behavior, microbiological quality and active-related methods may be relevant.
Set pull points around risk
Conditions and timing should reflect target markets, formulation risk, packaging and development stage.
Editorial boundary: General cosmetic development information only. Verify the actual formula, product, method and market requirements.