Science
Mechanism of Action
Tyrosine acts as a fundamental building block for melanin, the skin's natural pigment, thereby contributing to inherent UV protection. It also exhibits antioxidant properties, neutralizing free radicals and mitigating oxidative stress. Furthermore, tyrosine supports cellular regeneration and turnover, and plays a role in collagen synthesis, which is crucial for maintaining skin structure and elasticity.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
No specific data available to suggest it is commonly dusted or to establish dusting thresholds or red flag percentages for cosmetic applications.
The Formula
Formulation
Stability
L-Tyrosine exhibits low solubility in water (approximately 0.45 mg/mL) at 25°C within a pH range of 3.5 to 7.5. Its solubility significantly increases at extreme pH values, reaching about 3.5-4 mg/mL around pH 2 and pH 10. The derivative N-Acetyl-L-tyrosine is sensitive to high heat and requires careful temperature control during processing.
Safety
Safety Profile
Tyrosine is generally considered safe for cosmetic use, although the Cosmetic Ingredient Review (CIR) has not formally reviewed it. Patch testing is recommended as some individuals may experience mild allergic reactions, itching, or redness. It is unsuitable for individuals with phenylketonuria. The FDA acknowledges its use, advising adherence to general safety guidelines, but specific cosmetic use concentrations or GRAS status are not explicitly defined.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Tyrosine is a valuable amino acid offering antioxidant protection, cell regeneration, and collagen support, though clinical evidence for its topical efficacy in enhancing skin pigmentation remains mixed and requires further research.
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