Stearic acid is a naturally occurring fatty acid, typically derived from vegetable oils; the 'XXX' triple-pressed grade is a higher-purity form sold as flakes. It's typically used in formulations as a hardening, thickening, and opacifying agent for soap, creams, and lotions.
How is it used?
Melt into the oil phase of a lotion, cream, or soap batter alongside other oil-phase ingredients.
Forms
Available forms and grades affect how this ingredient behaves and how it should be selected for a formula.
Appearance
Color, texture, and physical characteristics can vary between suppliers and product grades.
Usage rate
Recommended incorporation levels depend on product type, supplier guidance, and the intended result.
Why we use it
Formulators choose this ingredient for specific performance, sensory, and stability benefits.
Strengths and limitations
Its advantages, compatibility considerations, and practical tradeoffs should be weighed during development.
Alternatives and substitutions
Possible replacements depend on the ingredient's role, desired skin feel, and formulation system.
Storage and shelf life
Appropriate storage conditions help protect quality and performance throughout the ingredient's usable life.
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