Science
Mechanism of Action
Biotin functions as a critical coenzyme for carboxylase enzymes, which facilitate the synthesis of fatty acids and the metabolism of amino acids and glucose. When applied topically, it stimulates keratinocyte production and the synthesis of keratin, directly contributing to the maintenance of the skin's lipid barrier and overall structural integrity.
Research
Clinical Evidence
Medium confidence0.3%
Key findings
- 01 A study on 0.3% biotin ointment demonstrated significant percutaneous absorption, increasing serum levels by 21% in healthy individuals and 81.7% in atopic dermatitis patients.
- 02 Clinical efficacy was observed at 0.2% in topical solutions designed to improve hair density and diameter through structural support.
Transparency
Dusting Analysis
Biotin is frequently included in formulations at trace amounts (below 0.01%) for label-claim marketing regarding 'hair and nail health.' For meaningful physiological impact on the skin barrier and keratinocyte activity, concentrations should ideally reach 0.1% to 0.3%.
The Formula
Formulation
Stability
Exhibits high thermal stability up to 100°C in acidic or neutral environments; however, it is susceptible to degradation in highly alkaline conditions (pH > 9).
Synergies
- Panthenol
- Zinc PCA
- Ceramides
Conflicts
- Avidin
- Strong oxidizing agents
- Strongly alkaline agents
Safety
Safety Profile
Reaffirmed by the CIR in 2017; safe for use near the eye area up to 0.1%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An effective biological catalyst for barrier repair and protein synthesis that is most impactful when formulated at concentrations above 0.1%.
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References
Sources