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Moumoujus

DIHYDROXYPROPYL CYSTINE.

Insufficient Data / HAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING

Dihydroxypropyl Cystine is a derivative of the amino acid L-Cystine, serving as a versatile ingredient primarily for its conditioning and humectant properties in skincare and haircare. It is believed to support overall skin health by contributing to antioxidant defense, collagen synthesis, and potentially influencing melanin production.

Summary

Hair Conditioning Humectant Skin Conditioning Antioxidant Support Collagen Booster Skin Brightening Support

Science

Mechanism of Action

As a derivative of L-Cystine, Dihydroxypropyl Cystine is hypothesized to operate through several pathways. L-Cystine acts as a crucial precursor for glutathione, a powerful endogenous antioxidant that neutralizes reactive oxygen species (ROS) and mitigates oxidative stress in the skin. It also plays a role in regulating melanin synthesis, potentially shifting production towards lighter pheomelanin, thus influencing skin tone. Furthermore, L-Cystine is integral to the synthesis and cross-linking of collagen, which is vital for maintaining the skin's structural integrity and biomechanical properties.

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

Specific optimal pH for Dihydroxypropyl Cystine stability is currently unavailable. However, drawing inferences from its parent compound, L-Cystine exhibits low solubility at neutral pH, with solubility increasing significantly at pH values below 2 or above 8. L-Cysteine, a related compound, is more stable in acidic solutions and can oxidize to L-Cystine in neutral or slightly alkaline aqueous environments. There is a potential risk of precipitation in formulations, particularly at higher concentrations or neutral pH, due to low solubility.

Conflicts

  • High temperature and humidity (inferred from L-Cysteine)
  • High pressure during compression (inferred from L-Cysteine)
  • Certain excipients, particularly those interacting with salt forms (inferred from L-Cysteine)
  • Conditions leading to precipitation due to low solubility at neutral pH (inferred from L-Cystine)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

No specific safety assessments by the Cosmetic Ingredient Review (CIR), Scientific Committee on Consumer Safety (SCCS), or FDA have been identified for Dihydroxypropyl Cystine as a cosmetic ingredient. Therefore, detailed safety profiles, including maximum safe concentrations or definitive sensitization risks, remain unestablished.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Insufficient Data

While Dihydroxypropyl Cystine presents promising inferred mechanisms based on its L-Cystine origin, comprehensive clinical efficacy and safety data specifically for this derivative in cosmetic applications are currently insufficient to provide a definitive recommendation.

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References

Sources