Stevia Rebaudiana Extract

Stevia rebaudiana extract is derived from the leaves of the stevia plant, a herb native to South America. The extract contains naturally occurring compounds including polyphenols and flavonoids, which are plant molecules known for their antioxidant properties.In skincare formulations, stevia extract is most commonly used as a flavouring agent. However, emerging research suggests it may also function as an antioxidant, helping to neutralise free radicals that can contribute to skin aging and damage.

Stevia extract works primarily through its polyphenol and flavonoid content. These compounds can donate electrons to neutralise free radicals—unstable molecules that damage skin cells and contribute to visible aging. By reducing oxidative stress, the extract may help maintain skin resilience.Research also suggests stevia contains compounds with antimicrobial potential, though the mechanisms and relevance to topical skincare remain under investigation. Most formulations rely on the extract's antioxidant rather than antimicrobial function.

Stevia extract is typically found in skincare products at low concentrations (around 0.1% in surveyed formulations). It is most effective as part of a broader skincare routine that includes other established antioxidants such as vitamin C or niacinamide. There is no specific usage frequency guidance; follow the instructions for the product in which it is formulated.

Stevia extract is generally well-tolerated in topical skincare. No significant safety concerns have been documented for cosmetic use, though those with known sensitivity to stevia (rare) should patch test first.