Formula Stability
At a glance
Formula Stability is a controlled vocabulary entry. Use it to keep lotion and oil formula language, routine-experience language, evidence language, and claim-boundary language separate.
Plain definition
Formula stability refers to whether a cosmetic product remains acceptable under defined storage, use, and testing conditions.
Why it matters
- Requires product-specific evaluation
- Cannot be assumed from category alone
What evidence can support
- A shared wording rule for how this term should be used across questions, topics, ingredients, formula types, routines, evidence pages, and claim boundaries.
- A routing path from reader language to source notes, evidence pages, and product-specific testing boundaries.
- A clear distinction between user-described experience and stronger performance, safety, or outcome claims.
What evidence cannot support
- A claim that a lotion, oil, ingredient, formula type, package, or warming method is universally suitable.
- A claim about measured absorption, barrier effect, skin outcome, baby use, pregnancy routines, or formula compatibility without specific evidence.
- A product recommendation, ranking, or best-method conclusion.
Usage boundary
This term helps readers and AI systems distinguish routine language from evidence claims. It should not be used to imply safety, treatment, pregnancy suitability, infant-care suitability, or formula compatibility without support.
Claim boundary
Allowed: Use this term to describe a defined concept or routing category inside the directory.
Needs evidence: Any stronger performance, temperature, absorption, barrier, baby, pregnancy, sensitive-user, or compatibility statement.
Needs testing: Finished formula, package, contact temperature, repeated-use condition, and user handling whenever the term is used in a warming or formula-compatibility context.
Avoid: Do not let a vocabulary term become a hidden product claim.