This synergistic combination functions as a high-performance moisturizing complex that optimizes osmotic pressure within skin cells. By integrating biotechnological fermentation with potassium-rich botanical extracts, it ensures sustained intracellular hydration for up to 24 hours.
- INCI Name:
- Saccharomyces Ferment, Imperata Cylindrica Root Extract
- Chemical/Scientific Name:
- Yeast Ferment Filtrate and Cogon Grass Root Extract
- Common Aliases:
- Moist 24, Japanese Blood Grass Extract, Fermented Yeast
| Category: | Active Substances |
| Source Origin: | Biotechnological (Yeast) and Botanical (Plant Root) |
| Comedogenic Rating: | 0 |
| Primary Industries: | Cosmeceuticals, Dermatology, Personal Care |
| Solubility: | Water-soluble |
At a Glance: Properties & Effects
| Hydration/Moisture: | |
| Barrier Repair: | |
| Soothing/Calming: | |
| Irritation Risk: |
Primary Benefits:
- Provides long-lasting hydration by maintaining intracellular osmotic equilibrium.
- Enhances the bioavailability of minerals and nutrients through the fermentation process.
- Improves skin suppleness and reduces the appearance of fine lines caused by dehydration.
- Supports the skin’s natural microbiome through postbiotic activity.
Potential Risks:
- Minimal risk of sensitivity in individuals with specific yeast allergies.
- Potential for formulation instability if paired with high concentrations of electrolytes.
Biological Action & Cosmetic Profile
Potassium ions play a critical role in the maintenance of cell turgor and hydration. Imperata Cylindrica Root Extract is naturally rich in potassium and 3-dimethylsulfoniopropionate (DMSP), molecules that act as organic osmoprotectants. These compounds allow skin cells to retain Aqua even under osmotic stress, effectively “locking” moisture within the epidermis rather than merely coating the surface.Biotechnological fermentation by Saccharomyces yeast transforms dense botanical matter into smaller, more bioavailable molecules. This process breaks down complex proteins and polysaccharides into amino acids and peptides, which penetrate the stratum corneum more efficiently. Furthermore, the fermentation byproduct contains beta-glucans and vitamins that reinforce the acid mantle and support cellular turnover.Synergy between these two components creates a reservoir effect. While many humectants like Glycerin provide immediate surface hydration, the Cogon grass extract works on a structural level to prevent transepidermal water loss (TEWL) over an extended period. Clinical evaluations often demonstrate a significant increase in skin moisture levels even 24 hours after a single application.
Broader Applications & Origins
The Imperata Cylindrica plant, often referred to as Cogon grass, is a resilient perennial found in subtropical regions, known for its ability to survive in high-salinity and drought-prone soils. Its survival mechanism—the accumulation of intracellular potassium—is exactly what cosmetic chemists harness for topical hydration. In traditional medicine, the rhizomes have been used for their anti-inflammatory properties, though modern cosmetic science focuses primarily on their hydro-regulating capabilities.Saccharomyces fermentation is a staple of “J-Beauty” and “K-Beauty” formulations. This yeast-derived filtrate is prized for its ability to brighten the complexion and improve the efficacy of other active ingredients. By combining this ancient fermentation wisdom with modern botanical extraction, formulators create “smart” moisturizers that adapt to environmental humidity levels.
Routine Integration
Synergies:
- Sodium Hyaluronate: Works in tandem to provide multi-depth hydration from the surface to the intracellular level.
- Niacinamide: Enhances barrier function and improves the skin’s overall texture.
- Panthenol: Boosts the soothing properties and aids in tissue repair.
- Squalane: Provides an emollient seal to prevent the evaporated loss of the water-based nutrients.
Conflicts:
- There are no known significant contraindications with common actives like Retinol or Ascorbic Acid.
Clinical Consensus & Safety
Dermatological assessments consistently categorize Saccharomyces Ferment and Imperata Cylindrica Root Extract as non-irritating and non-sensitizing. The Cosmetic Ingredient Review (CIR) Expert Panel has evaluated fermented ingredients and botanical extracts of this type, concluding they are safe for use in concentrations typically ranging from 1% to 3% in leave-on products. Clinical studies published in various dermatological journals highlight that the osmotic action of the root extract does not disrupt the lipid barrier but rather supports its integrity by preventing cellular desiccation.
Is this ingredient suitable for oily, acne-prone skin?
Yes. Because it provides hydration through osmotic regulation rather than heavy oils or waxes, it is non-comedogenic and lightweight. It helps balance oily skin that may be overproducing sebum due to underlying dehydration.
How does this differ from standard Hyaluronic Acid?
While Hyaluronic Acid is a humectant that holds water on the skin’s surface and within the extracellular matrix, Imperata Cylindrica Root Extract focuses on intracellular hydration by regulating potassium levels. This makes it more effective for long-term moisture retention compared to surface-level humectants alone.
Can it be used during pregnancy?
These ingredients are considered safe for topical use during pregnancy. They lack the systemic absorption or cellular toxicity associated with more aggressive actives like certain retinoids or hydroquinone.