Science
Mechanism of Action
Pisum Sativum Sprout Extract operates through a dual mode of action to support hair growth and provides extensive benefits for skin. For hair, it stimulates specific signal molecules within the dermal papilla cells, crucial for reactivating and sustaining the hair growth cycle. It specifically boosts the expression of the noggin gene by 85%, which shortens the telogen (resting) phase, and enhances the expression of fibroblast growth factor-7 (FGF7) gene by 56%, thereby stimulating the proliferation of hair germ cells. For skin, it offers antioxidant and anti-aging properties, stimulating endogenous collagen production, enhancing skin elasticity, and reducing the appearance of wrinkles. It safeguards dermal and epidermal proteins against proteases activated by aging and environmental aggressions (stress, pollution, UV). Furthermore, it acts as a long-lasting hydroregulator, deeply moisturizing, soothing irritation, reducing redness, promoting skin regeneration, minimizing fine lines, enhancing skin radiance, and demonstrating potential to reduce melanin production for a more even skin tone.
Research
Clinical Evidence
High confidence2-4% (topical for hair)
Transparency
Dusting Analysis
The clinically proven efficacy of Pisum Sativum Sprout Extract in stimulating hair growth is observed at concentrations ranging from 2% to 4%. These levels are above typical 'dusting' concentrations, indicating that manufacturers are incentivized to include it at effective percentages to achieve desired results. For its skin benefits, while not explicitly quantified by concentration in the provided data, a meaningful inclusion is implied by its diverse anti-aging and protective mechanisms.
The Formula
Formulation
Stability
This ingredient exhibits water solubility and is not suitable for pure oil-based formulations. For optimal integration, it should be dissolved into the aqueous phase during cold processes. In hot/cold manufacturing, it is advised to incorporate it during the cooling phase, specifically below 60 °C, with some recommendations suggesting addition below 40 °C, as brief exposures up to 60 °C do not compromise its stability. Powder forms should be pre-dissolved in a small amount of water prior to emulsification. While no precise optimal pH range is defined for the sprout extract itself, general pea proteins typically exhibit minimum solubility between pH 4 and 10.
Conflicts
- Not suitable for pure oil products due to water solubility
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Pisum Sativum (Pea) Protein safe for use in cosmetics, considering the significantly lower systemic exposure from topical application compared to dietary intake. Clinical studies involving Pisum Sativum Sprout Extract have consistently reported no adverse events, indicating good general tolerance. While isolated cases of cross-reactivity with pea vicilin have been noted following oral ingestion of peanuts in individuals with pre-existing pea anaphylaxis, this data is not directly predictive of topical sensitization in the general population.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Pisum Sativum Sprout Extract is a highly valuable botanical ingredient, clinically demonstrated to significantly enhance hair growth by shortening the resting phase and stimulating follicular proliferation, while concurrently providing a spectrum of benefits for skin health, including anti-aging, antioxidant, and hydrating effects.
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