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HYDROLYZED CHESTNUT EXTRACT.

Valuable / SKIN PROTECTING

Hydrolyzed Chestnut Extract, derived from the Castanea sativa fruit, utilizes enzymatic technology to deliver bio-available proteins, fatty acids, and short-chain polysaccharides to the skin. This sophisticated extract acts as a multi-functional agent, providing significant hydration and broad protective benefits, suitable for all skin types.

Summary

antioxidant soothing moisturizing skin protecting anti-inflammatory collagen stimulating anti-aging

Science

Mechanism of Action

This extract operates at a cellular level to enhance skin resilience, with its hydrolyzed nature ensuring optimal bioavailability of key components. It demonstrates potent antioxidant and anti-inflammatory properties, attributed to compounds like hydrolyzable tannins, which neutralize free radicals and mitigate inflammatory responses. Crucially, it inhibits matrix metalloproteinases—enzymes responsible for collagen and elastin degradation—while simultaneously stimulating type I procollagen synthesis in human skin fibroblasts. This dual action helps to preserve structural integrity and reduce the visible signs of aging. Furthermore, it supports a healthy skin barrier and microbiome, offering soothing effects against environmental stressors.

Research

Clinical Evidence

Medium confidence
Effective range ≥1%
Optimal

N/A

Key findings

  1. 01 A treatment incorporating 1% hydrolyzed chestnut extract significantly improved the condition of stressed hair surfaces and boosted moisturization by up to 30%. Although conducted on hair, these moisturization benefits are highly relevant to skin hydration.
  2. 02 General Castanea sativa extracts, while not always specified as 'hydrolyzed,' have exhibited antioxidant and anti-inflammatory effects on skin, inhibited matrix metalloproteinases, and enhanced type I procollagen synthesis in human skin fibroblasts. These actions contribute to a reduction in the appearance of wrinkles and other signs of aging, although specific effective concentrations for Hydrolyzed Chestnut Extract on skin are not yet explicitly defined.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4 – 6
0 7 14

Stability

An oil-in-water (O/W) cream formulation containing Castanea sativa shells extract demonstrated pH compatibility within the skin's optimal range (pH 4-6) and maintained stability for 30 days at 25°C.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) has not specifically assessed Hydrolyzed Chestnut Extract. However, a patch test on a related Castanea sativa leaf extract indicated it can be considered safe for topical application with minimal irritant effects. Independent assessments also report low concerns for cancer, allergies, and immunotoxicity for this ingredient. No specific FDA cosmetic status is available.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Hydrolyzed Chestnut Extract is a valuable ingredient, delivering comprehensive benefits including significant moisturization, potent antioxidant protection, anti-aging support through collagen synthesis, and soothing properties, all with a favorable safety profile across all skin types.

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