Science
Mechanism of Action
This extract functions through several biological pathways: its rich composition of vitamins (C, E, K), caffeic acid, fatty acids, amino acids, polysaccharides, and flavonoids provides robust antioxidant and anti-inflammatory benefits. As a mild astringent, it assists in regulating excess oil and sebum production. Specific compounds, including cucurbitacin D and 23,24-dihydrocucurbitacin D, have been identified as inhibitors of tyrosinase and melanin synthesis, leading to a skin-lightening effect. Additionally, caffeic and ascorbic acids enhance the skin's water retention, offering humectant and moisturizing benefits, and it may help preserve hyaluronic acid and elastin levels. The presence of shikimate dehydrogenase further contributes to its anti-inflammatory actions, making it effective in reducing puffiness and dark circles.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Demonstrated no dermal irritation or sensitization when incorporated into eye lotion formulations.
- 02 Showed no dermal irritation in ethanol extract oil-in-water emulsion-based creams.
- 03 Exhibited an absence of sensitization and phototoxicity potential. While some irritant responses were observed during challenge tests in certain subjects, a 21-day use study of a 5% eye gel showed no irritation.
- 04 Reported significant reduction in melanin production over a 72-hour period, indicating skin whitening and hydrating properties.
Transparency
Dusting Analysis
While some efficacy data lacks specific concentration, and the highest reported use in certain cosmetic categories is 1%, there is no direct evidence to suggest Cucumis Sativus Extract is commonly used at concentrations below a known effective threshold for all its benefits, thus it is not considered 'dusted' based on available data. The CIR Expert Panel deemed it safe as used in current practices.
The Formula
Formulation
Stability
The extract demonstrates good pH stability, with values remaining nearly constant during experimental periods. It is typically extracted in aqueous or glycol-aqueous mixtures (e.g., glycerin and water, or water and butylene/propylene glycol). For optimal stability, storage away from heat and direct sunlight is recommended.
Safety
Safety Profile
The CIR Expert Panel concluded that Cucumis Sativus-derived ingredients are safe for use in cosmetic formulations under current practices and concentrations. The highest reported concentration for Cucumis Sativus Fruit Extract in eye lotions and face/neck products is 1%. As a commonly consumed food recognized by the FDA, oral exposure is not associated with significant safety concerns.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Cucumis Sativus Extract is a valuable ingredient offering broad benefits across all skin types, including soothing, hydrating, antioxidant protection, and potential skin brightening, all with a high safety profile and low risk of irritation or comedogenicity.
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