Science
Mechanism of Action
This extract functions primarily as an emollient, softening and smoothing the skin, and as a humectant, aiding in maintaining and retaining moisture within cosmetic formulations and on the skin's surface. Extrapolating from related Dioscorea species, it is also believed to reinforce the skin's natural protective barrier, stimulate collagen production for anti-aging benefits, and impart antioxidant and anti-inflammatory effects through its rich content of vitamin C and other bioactive compounds.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 Studies on related Dioscorea Japonica Root Extract have demonstrated anti-aging properties, including stimulation of collagen production, strengthening of skin structure, and reduction in the appearance of fine lines. This extract also reportedly enhances the skin's natural protective barrier, improves moisture retention, and exhibits moisturizing, anti-inflammatory, and skin-soothing characteristics, attributed to its richness in vitamin C, antioxidants, and bioactive compounds.
- 02 General Dioscorea extracts exhibit anti-inflammatory activity by inhibiting pro-inflammatory cytokine production and modulating inflammation-related signaling pathways, with beneficial bioactive substances such as polysaccharides, polyphenols, and steroidal saponin derivatives. They additionally display antioxidant properties.
- 03 A formulation containing 0.5% of Dioscorea hispida extract, a different Dioscorea species, demonstrated stable tyrosinase and elastase inhibitory activities. However, it concurrently induced mild skin irritation (level 2) in guinea pigs during a sensitization dermal toxicity test.
Transparency
Dusting Analysis
While specific dusting data for Dioscorea Panthaica Root Extract is not available, the maximum reported use concentration for the related Dioscorea Villosa Root Extract in non-spray moisturizing products was 0.3% in 2022. Caution is advised as a different Dioscorea species (D. hispida) showed mild irritation at 0.5%.
The Formula
Formulation
Stability
No specific optimal pH range for the stability of Dioscorea Panthaica Root Extract has been identified. As a general extract, it contains water-soluble polysaccharides and can be obtained using various solvents like water, alcohol, or carbon dioxide. Formulators should account for the possibility of rare allergic reactions, recommending patch testing. If the extract contains diosgenin, as found in related Dioscorea species, its concentration requires consideration due to potential endocrine activity. Certain species, such as Dioscorea hispida, have shown mild irritancy at concentrations of 0.5%.
Safety
Safety Profile
Although Dioscorea Panthaica Root Extract lacks formal CIR, SCCS, or FDA safety status, the CIR Expert Panel concluded that the related Dioscorea Villosa (Wild Yam) Root Extract is 'safe as used in cosmetic formulations' when prepared to yield a similar chemical profile, specifically with an expected upper limit of 3.5% diosgenin. The maximum reported usage for Dioscorea Villosa Root Extract in 2022 was 0.3% in non-spray moisturizing products. While undiluted Dioscorea Villosa extract was rated as an irritant in rabbit skin tests, a 10% dilution was found to be non-irritating. The ingredient is generally regarded as safe, though rare allergic reactions like skin rashes or itching may manifest, particularly in sensitive individuals, suggesting a patch test. INCI Beauty indicates 'No penalty' for this ingredient across all categories.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While Dioscorea Panthaica Root Extract offers basic emollient and humectant benefits, and promising anti-aging and anti-inflammatory effects are suggested by related species, direct clinical evidence specifically for this extract remains limited.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources