Stevia Rebaudiana Leaf Extract is a natural ingredient derived from the leaf and steam of a traditional sweetener. Stevia is a plant native to Paraguay. Stevia (Sweet Honey Leaf) is a perennial herb known for its sweetness.
More than 300 times sweeter than sugar, Stevia has been used as a sweetener and flavor enhancer for centuries. It also has a long history in Brazilian herb medicine for treating a variety of complaints. It is commercially grown in parts of South America and Asia.
The cosmetic benefits of Stevia Rebaudiana Leaf Extract to the skin appear to improve the skin's moisture barrier. Studies show that it enhances hydration and smoothes the skin, resulting in a more youthful appearance. This improvement in the skin barrier also keeps harmful external elements out while keeping the skin's natural moisture in.
Clinical studies to determine the efficacy of Stevia Rebaudiana Leaf Extract, a skin moisture and smoothness study, were developed using 1% of this ingredient in a gel and compared to a placebo gel containing glycerin and untreated skin. Hydration efficacy was measured by corneometry. After 28 days of treatment, skin hydration was improved by 20% compared to untreated skin.
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