Science
Mechanism of Action
This ingredient primarily acts as an antifungal, specifically inhibiting the proliferation of Malassezia (Pityrosporum Ovale) fungi, which are common instigators of dandruff and seborrheic dermatitis. Its mechanism involves disrupting the fungi's cellular integrity and metabolic processes through the chelation of essential metal ions, particularly iron, crucial for fungal enzyme function. Furthermore, MEA-HYDROXYOCTYLOXYPYRIDINONE has been observed to assist in regulating sebum production, offering additional benefits for skin balance.
Research
Clinical Evidence
High confidenceFor efficacy in various skin and scalp applications, concentrations typically range from 0.1% to 1.0%. For instance, up to 0.2% is effective in leave-on anti-acne products, 0.5% relieves scalp itching in anti-dandruff formulations, and concentrations of 0.5% to 1.0% demonstrate good tolerance in face creams.
Key findings
- 01 At a concentration of 0.5%, this ingredient effectively relieved scalp itching within days when incorporated into anti-dandruff formulations.
- 02 In human face cream applications, formulations containing 0.5% and 1.0% concentrations exhibited good acceptance and tolerance.
- 03 Leave-on anti-acne products demonstrated efficacy with typical concentrations up to 0.2%.
- 04 Human Repeat Insult Patch Tests (HRIPT) indicated that a 0.5% concentration did not induce irritation or sensitization.
Transparency
Dusting Analysis
Information regarding the dusting behavior of MEA-HYDROXYOCTYLOXYPYRIDINONE is not available in the provided research data.
The Formula
Formulation
Stability
MEA-HYDROXYOCTYLOXYPYRIDINONE maintains stability within a pH range of 3.0 to 9.0 and exhibits good thermal stability, withstanding temperatures above 80°C for short durations. However, direct ultraviolet (UV) radiation can lead to decomposition, necessitating protection from light. Its solubility in water varies with pH, being slightly higher in neutral or weakly basic solutions, and it is generally slightly soluble in both water and oil but freely soluble in 10% ethanol solutions, surfactant-containing water, ethanol, and propylene glycol.
Conflicts
- Cupric ions (copper)
- Ferric ions (iron)
- Aldehyde groups in some fragrances (potential discoloration)
- Keto groups in some fragrances (potential discoloration)
Safety
Safety Profile
The SCCS (Scientific Committee on Consumer Safety) has approved MEA-HYDROXYOCTYLOXYPYRIDINONE for cosmetic use, with a maximal concentration of 1.0% in rinse-off products and 0.5% in leave-on products when used as a preservative. For non-preservative applications in leave-on face care, up to 1.0% is considered safe. It exhibits low toxicity and irritation, being classified as non-sensitizing, non-genotoxic, and non-teratogenic. While the FDA issued a 'call-for-data' for its use in OTC anti-dandruff products, its official 'generally recognized as safe and effective' (GRASE) status is currently pending.
Your Skin
Skin Compatibility
Our Assessment
Verdict
MEA-HYDROXYOCTYLOXYPYRIDINONE is a valuable, well-tolerated antimicrobial and anti-seborrheic ingredient with proven efficacy for diverse skin and scalp concerns, offering significant formulation stability.
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