Science
Mechanism of Action
This ingredient functions by maintaining the skin's optimal condition, contributing to a soft, smooth, and healthy appearance. As a rich source of antioxidants like kaempferol, phytonutrients, vitamins, and trace elements, Rebaudioside A combats oxidative stress by controlling lipoperoxidation and protein carbonylation, effectively scavenging free radicals. It also exhibits anti-inflammatory effects and has been observed in stevia extracts to potentially mitigate signs of aging, such as treating wrinkles and improving the tensile strength of wrinkle fibroblasts.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Rebaudioside A exhibits stability within a pH range of 2.8 to 4.2, though its stability is significantly compromised by light exposure, with degradation rates increasing alongside light intensity. Degradation can occur approximately 10 times faster in citrate buffers compared to phosphate buffers at both pH 3 and 7 when exposed to UV light. Light-protective packaging is crucial for maintaining its integrity. It is sparingly soluble in water (1.0%) and ethanol, but freely soluble in a 50/50 ethanol:water mixture.
Safety
Safety Profile
Rebaudioside A is Generally Recognized As Safe (GRAS) by the FDA for both topical cosmetic use and as a food sweetener. High purity formulations (95-99%) are generally considered safe. There is currently no specific CIR report or SCCS opinion available for Rebaudioside A in cosmetic applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Rebaudioside A is a valuable multi-functional ingredient offering skin conditioning, potent antioxidant, and anti-inflammatory benefits with low irritancy, though specific clinical efficacy data at defined concentrations is currently limited.
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References
Sources