Assertion: henna's ingredient | /r/ObjectUse | used in hair dyes
Facets:
Source sentences:
text: Some of the ingredients used in hair dyes (including certain aromatic amines) have been shown to cause cancer in lab animals, usually when the animals were fed large amounts of the dyes over a long period of time.
text: The FDA does not approve each ingredient used in hair dyes before it goes on the market, and in general the responsibility for the safety of products and ingredients falls to the manufacturers.
text: This includes any new ingredients to be used in hair dyes.
text: Government regulations control what ingredients may be used in hair dyes, as many of them are toxic.