Cool Best Natural Hair Dye Ideas. The formulas are super simple, too: If you’re okay with spending a little extra.

Hair dye can contain potentially harmful chemicals. Coffee if you’re looking to go darker with your hair, coffee hair dye would be a good natural option to try. Web while there are natural options like henna or even a few interesting vegetable concoctions that claim to help color your hair, there are plenty of simpler diy hair dyes out there as well.