Is is safe to flush the remainder extra hair color down the drain?

That's a very harsh chemical. Seal it up and throw in the trash.

Considered toxic waste - heavily regulated in some states. Dispose of according to what your refuse company recommends. Where I live they have a free toxic clean up day about every 3 months or so.

Hi May,

I looked this up because I used to color my hair to give it more body. Think about it this way, if you're coloring you hair the hair color goes down your drain so I would suggest mixing in some water then sending it down the drain, then put the container in the recycling bin. If you put it in the regular trash it goes to the landfills. If it goes to the recycling bin, it is recycled. That is my opinion after reading a little about this issue, BUT I would recommend to be sure by calling you local Dept. of Public Works or Sanitation Dept. to see what they say. Wishing you the best.

I did a little research on this, and, apparently it varies by municipality and state. Some places regulate it more tightly than others. Some allow disposal down the drain if you run water, some landfills allow it to be put in garbage. Apparently it can be labeled as hazardous waste, which limits disposal. So, research your local regulations. You should be able to find out online or by phone.

Another thing many people don't bother to read on Kleenex AND MOST facial tissue boxes is "DON'T FLUSH!" Surprize to me.

Wow, I was amazed at the variety of answers, I need to check what is on the bottle as far as ingredients, call the manufacturer and check out local regulations.