Formulation Chemistry Guides
Index
Select a topic below to explore the physical chemistry governing cosmetic stability.
Core Analysis
Formulation and regulation are intrinsically linked. An ingredient that provides excellent yield stress might be restricted to 0.1% in the final formula due to toxicological concerns. Always cross-reference functional desires with regulatory constraints.
| Parameter | Critical Value | Impact |
|---|---|---|
| Temperature | >45°C | Accelerates degradation kinetics |
| pH Range | 4.5 - 5.5 | Optimal for skin microbiome & organic acids |
| Water Activity (aw) | < 0.6 | Microbes cannot proliferate |
Frequently Asked Questions
Where should I start?
Start with emulsion stability. If you cannot stabilize oil and water, nothing else matters.
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Reference