Science
Mechanism of Action
As a glyceryl monoester, Glyceryl Stearate Lactate functions as an emollient by forming a protective barrier on the skin's surface. This action reduces moisture loss, maintains hydration, and imparts a lubricated, conditioned, soft, and smooth feel to the skin. It also serves as a crucial emulsifier, enabling the stable blending of water and oil phases in formulations to ensure consistent product texture. The lactate component may further contribute to humectant properties, attracting and retaining moisture in the skin.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 In a repeat-insult patch test, Glyceryl Palmitate Lactate, a closely related glyceryl monoester, did not induce skin irritation or sensitization in human subjects when tested at a 50% w/v concentration. While this study specifically refers to a related compound, it supports a favorable safety profile within this ingredient class for skin compatibility.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Similar to related glyceryl stearates, Glyceryl Stearate Lactate exhibits chemical stability under normal storage conditions. However, it can decompose when exposed to extreme heat, intense light, or the presence of strong acids or bases. For effective integration into formulations, it is typically added to the oil phase and heated to 60-75°C to ensure complete melting and efficient mixing.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Glyceryl Stearate Lactate, alongside other glyceryl monoesters, to be safe for use in cosmetic formulations at current concentrations and practices. While undiluted forms of glyceryl monoesters may cause minor skin irritation, particularly on abraded skin, they are generally not irritating at the concentrations typically used in cosmetics. The related ingredient, Glyceryl Stearate, has also received GRAS (Generally Recognized As Safe) status from the FDA for its use as a direct and indirect food additive, and as an over-the-counter substance, further supporting its benign nature.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Glyceryl Stearate Lactate is a valuable ingredient, effectively stabilizing formulations while offering significant emollient and potential humectant benefits across all skin types with a low risk of irritation.
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