Assertion: detergent's brightener | /r/HasProperty | optical
Facets:
Source sentences:
text: Ordinary laundry detergents contain optical brighteners, which are poorly washfast fluorescent dyes that convert invisible ultraviolet light to make your fabric appear brighter.
text: Laundry detergents may contain builders (50% by weight, approximately), surfactants (15%), bleach (7%), enzymes (2%), soil antideposition agents, foam regulators, corrosion inhibitors, optical brighteners, dye transfer inhibitors, fragrances, dyes, fillers and formulation aids.