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Moumoujus

ETHYL CYSTEINATE HCL.

Insufficient Data CAS 868-59-7 / SKIN PROTECTING

Ethyl Cysteinate HCl is a derivative of cysteine, an essential amino acid, engineered to bolster the skin's natural defense mechanisms. It primarily functions by increasing intracellular glutathione, a potent antioxidant, to protect against oxidative stress and mitigate potential inflammation.

Summary

antioxidant glutathione booster anti-inflammatory (potential)

Science

Mechanism of Action

Ethyl Cysteinate HCl (ECH) acts as a precursor to glutathione, providing the necessary cysteine building block for its synthesis within cells. Glutathione is a critical endogenous antioxidant, safeguarding cellular components from oxidative damage and helping to maintain crucial redox balance. This action directly counteracts free radical damage in the skin. Furthermore, preliminary research suggests ECH may also exert direct anti-inflammatory effects.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Ethyl Cysteinate HCl is a hygroscopic solid, prone to absorbing atmospheric moisture, and is sensitive to heat. While it is water-soluble, long-term stability in aqueous solutions is a concern, with potential degradation. Preliminary data suggests a neutral pH (around 7.2) might offer some stability for related compounds.

Conflicts

  • oxidizing agents
  • water (for long-term stability/degradation)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

Ethyl Cysteinate HCl has not undergone specific safety review by either the Cosmetic Ingredient Review (CIR) Expert Panel or the Scientific Committee on Consumer Safety (SCCS) for cosmetic applications. While a related compound, Cysteine hydrochloride, is FDA approved for injection, this does not extend to topical cosmetic use of Ethyl Cysteinate HCl.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Insufficient Data

While Ethyl Cysteinate HCl exhibits a promising biochemical mechanism for antioxidant and potential anti-inflammatory effects by boosting cellular glutathione, there is currently insufficient robust clinical efficacy data and a lack of specific cosmetic safety reviews for its topical application.

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