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CASTANEA SATIVA SEED EXTRACT.

Valuable CAS 84695-99-8 / SKIN CONDITIONING

A refined botanical extract derived from the European Chestnut that serves as a biological catalyst for skin barrier restoration and textural refinement. It bridges the gap between surface hydration and structural integrity by stimulating the skin's internal moisture-retention mechanisms.

Skin conditioning Barrier repair Antioxidant Humectant Soothing

Science

This extract functions as a biological humectant by upregulating Natural Moisturizing Factors (NMFs) and promoting keratinocyte differentiation. It utilizes specialized rhamnoglacturonans and galacturonic acids to normalize the desquamation process while simultaneously triggering the synthesis of essential epidermal lipids, specifically ceramides, to fortify the stratum corneum against transepidermal water loss.


Research

High confidence
Effective range 1–3%
Optimal

3%

Key findings

  1. 01 In vivo testing at 3.0% showed a 19.9% decrease in wrinkle depth and a 16.2% lifting effect within 28 days of use.
  2. 02 Application at 1.0%-3.0% resulted in a 15.5% improvement in skin tone and enhanced barrier homeostasis via increased ceramide and involucrin production.

Transparency

Commonly dusted
Min. effective
1%
Red flag below
0.5%

While frequently found in trace amounts for label appeal, clinical data suggests that a minimum of 1.0% is required to influence lipid synthesis, with 3.0% being the benchmark for measurable anti-aging and lifting results.


The Formula

Solubility
Water
Optimal pH 4.5 – 5.5
0 7 14

Stability

The ingredient is thermolabile and must be introduced during the cooling phase at temperatures below 40°C. Antioxidant properties are compromised in environments with a pH greater than 7.1.

Synergies

  • Ceramides
  • Glycerin
  • Hyaluronic Acid
  • Fatty Acids

Conflicts

  • Strong oxidizing agents
  • Alkaline environments (pH > 7.0)
  • High-heat processing (>80°C)

Safety

CIR Status
Safe as used
Max tested
10%
Pregnancy
Safe
Sensitization risk Low

Classified as non-toxic and a safe skin conditioning agent by both CIR and EU CosIng regulations.


Your Skin

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

Our Assessment

Valuable

An exceptional multi-tasking botanical that provides verifiable structural improvements to the skin barrier and surface texture when formulated at active concentrations.


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