Science
Mechanism of Action
This extract operates through several pathways to improve skin health. It is rich in phytochemicals such as phenols, flavonoids, saponins, anthocyanins, carotenoids, and allantoins, providing robust antioxidant activity by scavenging free radicals. Its anti-inflammatory capabilities help to soothe redness and swelling, potentially aiding in the skin's natural healing processes. By stimulating collagen production, Dioscorea Batatas Root Extract assists in strengthening the skin's structural integrity, which can lead to a reduction in the appearance of fine lines and a more youthful contour. Furthermore, it supports the skin's natural protective barrier, thereby improving moisture retention and contributing to a smoother, less dehydrated skin surface. Some evidence from related Dioscorea species suggests potential benefits for evening out skin tone through melanin inhibition and sebum control, possibly due to phytoestrogen content.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
No data available to suggest this ingredient is commonly 'dusted' in formulations; its reported use concentrations are specific.
The Formula
Formulation
Stability
The dioscorin protein component of yam remains stable within a pH range of 5.0 to 10.0; however, extraction is compromised at pH 4.0. For optimal safety and efficacy, extracts should be carefully prepared to maintain a specific chemical profile, particularly ensuring diosgenin content does not exceed an upper limit of 3.5%.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Dioscorea Villosa (Wild Yam) Root Extract, a closely related species often treated interchangeably, is safe for use in cosmetic products. This safety assessment holds for extracts with comparable chemical profiles, specifically those containing up to 3.5% diosgenin. Undiluted Dioscorea Villosa extract was noted as an irritant to skin, but a 10% dilution was non-irritating and did not cause sensitization, only mild eye irritation. The maximum reported use concentration in non-spray moisturizing products in 2022 was 0.3%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Dioscorea Batatas Root Extract is a valuable botanical ingredient offering diverse benefits, including antioxidant protection, potential collagen stimulation, and barrier support, making it suitable for a wide range of skin types and formulations.
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