Root Shadow With Permanent Haircolor, Yes or No?

What Would You Do: Root Shadow Using Demi, Semi or Permanent Color

This “dude with sign” meme just sparked a major debate among colorists—and more importantly, a conversation—that feels long overdue. So, should you root shadow with permanent haircolor or something else, and does it really matter? We did a deep dive into the comments section to hear all sides of the debate, and (bonus!) dug up some helpful knowledge from the BTC community. 

Remember: Everyone is entitled to their own creative process and formulating is not one-size-fits-all. We are simply showing you different opinions, so you…