response: To be honest, I am also unaware of that. But, since we're talking about chemicals, did you know that the (TSCA) regulates their introduction?
original_response: Some do but thankfully there's the TSCA or Toxic Substances Control Act which helps protect consumers against dangerous chemicals.
history: I love to color my hair. I recently colored it purple. How interesting! Did you do it yourself or did you go to a professional? I did it myself at home. Do you have any advice on how to maintain it? I don't have any advice. What I can tell you is that in 2011 alone, at-home coloring in the US reached 1.9 billion dollars. Wow, that's a lot of money. It can be stressful dying your hair by yourself. I wonder how they dyed it in ancient times. That is something I also can't answer. If it helps, I know that there are natural dyes from plant sources Wow, that's probrably safer than putting a bunch of chemicals in your hair. Do the chemicals in modern hair dyes have any adverse effects?
knowledge: The Toxic Substances Control Act (TSCA) is a United States law, passed by the United States Congress in 1976 and administered by the United States Environmental Protection Agency, that regulates the introduction of new or already existing chemicals.