Science
Mechanism of Action
Quinic acid mediates its effects via several key pathways. It acts as an antioxidant and anti-inflammatory agent, actively reducing oxidative stress. Notably, it promotes the migration and proliferation of dermal fibroblasts, upregulating genes such as FN1 and COL1A1, which are critical for the synthesis of fibronectin and type I collagen, respectively, thereby supporting the skin's natural wound healing processes. Furthermore, it possesses antibacterial activity against certain bacteria and serves as a buffering agent to stabilize product pH.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 An in vitro study at 20 µg/ml showed that quinic acid stimulated the migration and proliferation of human dermal fibroblasts. This was achieved by regulating oxidative stress and increasing the expression of FN1 and COL1A1 genes, suggesting potential for wound healing.
- 02 In vitro investigations on 3,5-dicaffeoyl-epi-quinic acid (DEQA), a derivative of quinic acid, demonstrated antiphotoaging effects in UVA-irradiated human dermal fibroblasts. DEQA decreased MMP-1 production, increased type I collagen, and downregulated MMP-1, MMP-3, and MMP-9 expression, concurrently stimulating TGF-β/Smad signaling pathways.
Transparency
Dusting Analysis
No specific research data indicates that quinic acid is commonly associated with 'dusting' in cosmetic formulations, nor are there established dusting thresholds or red flag percentages.
The Formula
Formulation
Stability
Quinic acid is an organic acid readily soluble in water, functioning effectively as a buffering agent. Its pH in a 10g/l aqueous solution is 2.0 at 20℃. While a precise optimal pH range for its stability in formulations is not explicitly stated, it is generally expected to exhibit greater stability in acidic environments, with studies on related derivatives indicating potential degradation at higher, more alkaline pH values.
Safety
Safety Profile
Quinic acid has not undergone a specific safety review by the Cosmetic Ingredient Review (CIR) Expert Panel or the Scientific Committee on Consumer Safety (SCCS) for cosmetic applications. In the U.S., cosmetic products and ingredients (excluding color additives) do not require pre-market FDA approval. While a Sigma-Aldrich MSDS indicates it 'may cause irritation', its overall sensitization risk remains largely unknown without specific cosmetic review data.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Quinic acid demonstrates compelling in vitro potential for antioxidant protection, promoting collagen production, and wound healing, alongside its utility as a pH adjuster, though comprehensive in vivo data is still required to define optimal concentrations and full safety parameters for topical use.
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