Here's what we know:
* She has had several different hair colors. She's been seen with shades of blonde, light brown, and red.
* She has spoken about embracing her natural hair color. In 2021, she posted a photo of herself with her natural, darker brown hair and mentioned she was loving it.
It's possible that she uses hair dye to achieve some of her lighter hair colors, but it's also possible that she uses other methods like highlights or temporary color treatments.
Ultimately, whether or not Bindi Irwin dyes her hair is a personal choice, and she hasn't publicly shared any details about her hair coloring routine.