Science
Mechanism of Action
Methylinositol acts as a significant antioxidant and anti-inflammatory agent within the skin. It has been shown to enhance wound healing in human dermal fibroblasts exposed to UVA radiation and to counteract the UVA-induced upregulation of matrix metalloproteinase 1 (MMP1). Furthermore, it reverses the UVA-driven decline in collagen type I and tissue inhibitor of metalloproteinases 1 (TIMP1). Mechanistically, it reverses UVA-induced phosphorylation of ERK and JNK, while increasing Smad3 phosphorylation, which is crucial for collagen synthesis via the TGF-β signaling pathway. It also functions as a geroprotector, aiding in cellular longevity, and as a compatible osmolyte, supporting cellular hydration and resilience.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Methylinositol (D-Pinitol) is hygroscopic, meaning it readily absorbs moisture. While general inositol is stable, it is combustible and incompatible with strong oxidizing agents.
Conflicts
- strong oxidizing agents
Safety
Safety Profile
The CIR Expert Panel concluded that Inositol, including precursors to Methylinositol, is safe for use in cosmetics. It is used in concentrations up to 4% in face and neck preparations as of 2024. Safety assessments indicate no evidence of irritation or sensitization and an absence of positive alerts in various toxicological studies. Inositol also holds a Generally Recognized As Safe (GRAS) status by the FDA for food and dietary supplement applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Methylinositol is a valuable, multifaceted ingredient offering significant benefits in antioxidant protection, anti-inflammatory action, collagen support, and hydration, suitable for a wide array of skin types and concerns.
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References
Sources