Assertion: nail polish's formaldehyde | /r/HasProperty | preservative
Facets:
Source sentences:
text: Nevertheless, you should still check it is free of formaldehyde (a preservative), toluene (a solvent), parabens (synthetic preservatives) and camphor (which gives a glossy finish and prevents chipping).
text: Formaldehyde is a preservative that has been recognized by the National Cancer Institute as a potential cancer-causing substance.