Science
Mechanism of Action
It functions by creating a flexible, breathable occlusive barrier that significantly reduces transepidermal water loss (TEWL) and refines skin texture. Additionally, the presence of calcium ions helps reinforce the skin's natural epidermal calcium gradient, which is vital for healthy keratinocyte differentiation and barrier repair.
Research
Clinical Evidence
High confidence2.5%
Key findings
- 01 Concentrations as low as 0.5% are clinically validated to stabilize emulsions and modulate viscosity effectively.
- 02 Safety assessments indicate that concentrations up to 25% are non-toxic for leave-on dermal applications.
- 03 Research suggests that lower concentration thresholds (2.5%) eliminate risks associated with residual monomers compared to industrial-grade levels.
Transparency
Dusting Analysis
Because it can provide thickening and texture-enhancing properties at very low percentages (0.5%), many brands include it at 'trace' levels (under 0.1%) merely for label claims without providing actual structural or barrier benefits.
The Formula
Formulation
Stability
Highly stable in aqueous environments via hydrogen bonding; however, its thickening efficiency can be compromised by high salt concentrations or electrolytes.
Synergies
- Humectants
- Non-ionic surfactants
- Emollients
Conflicts
- Cationic surfactants
- Strong electrolytes
- High-concentration polyvalent metal ions
- Strong oxidizing agents
Safety
Safety Profile
Safety is contingent on high-purity standards; residual acrylic acid monomers must be strictly maintained below 100 ppm to ensure non-irritancy.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A reliable, multi-tasking polymer that provides essential structural stability to formulas while simultaneously supporting the skin's physical barrier.
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References
Sources