Science
Mechanism of Action
Slowly hydrolyzes in water-based systems to release formaldehyde, which preserves products by cross-linking proteins and nucleic acids in bacterial and fungal cells
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Human patch testing revealed 21% of formaldehyde-allergic patients (5 out of 24) developed allergic reactions at 1.0% concentration, demonstrating cross-reactivity potential
Transparency
Dusting Analysis
Given its formaldehyde-releasing nature and 21% sensitization rate in allergic individuals, any meaningful concentration warrants scrutiny
The Formula
Formulation
Stability
Exhibits pH-dependent stability and formaldehyde release rates; remains stable in alkaline conditions but may decompose rapidly at very low pH
Conflicts
- Proteins
- Amino acids
- Strong acids
- Cationic surfactants
- Formaldehyde-sensitive actives
Safety
Safety Profile
EU restricted to 0.3% maximum in ready-to-use preparations; prohibited in oral products and mucous membrane applications
Your Skin
Skin Compatibility
Our Assessment
Verdict
While effective as a preservative, its formaldehyde-releasing mechanism and high sensitization risk make it unsuitable for modern precision skincare formulations.
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