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CORYLUS ROSTRATA TWIG EXTRACT.

Insufficient Data / ANTIOXIDANT, SKIN CONDITIONING

Corylus Rostrata Twig Extract, derived from the American hazelnut twig, is recognized for its potential antioxidant and skin-conditioning properties. Aqueous extractions have demonstrated a significant capacity to neutralize harmful free radicals, supporting skin health.

Antioxidant Skin Conditioning

Science

This extract functions primarily as an antioxidant and skin conditioning agent. Specifically, aqueous preparations have shown a notable ability to scavenge reactive species such as superoxide anion and nitric oxide, which are implicated in inflammatory processes. Ethanolic extracts, while exhibiting anti-enzymatic activity against catalase and xanthine oxidase, also displayed higher cytotoxicity to normal human keratinocytes.


Research

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 In vitro investigations of aqueous Corylus cornuta twig extracts (synonymous with Corylus Rostrata twig extract) revealed high antiradical and antioxidant capacities. These extracts were particularly effective in neutralizing superoxide anion and nitric oxide, with minimal toxicity observed on normal human keratinocytes.
  2. 02 Ethanolic extracts of Corylus cornuta twigs demonstrated anti-enzymatic activity towards catalase and xanthine oxidase, but concurrently exhibited higher cytotoxicity to normal human keratinocytes compared to aqueous extracts.

Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The method of extraction significantly influences the safety and efficacy profile; aqueous extracts of Corylus cornuta twigs demonstrate lower toxicity to normal human keratinocytes compared to ethanolic preparations, suggesting careful consideration of the extract type in formulation.


Safety

CIR Status
Insufficient data
Sensitization risk Unknown

The CIR Expert Panel has indicated insufficient data to determine the safety of related hazelnut leaf and seed extracts in cosmetics. While specific evaluation for twig extract is absent, this highlights a broader data gap for the Corylus genus. Food-related hazelnut allergies are documented by the FDA, but this pertains specifically to ingestible products and not topical cosmetic applications of the twig extract.


Your Skin

No Normal
No Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Insufficient Data

While aqueous extracts demonstrate promising antioxidant properties with low cellular toxicity, further comprehensive safety and efficacy data are required for a definitive assessment of this ingredient in cosmetic formulations.


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