It is widely believed that Florence Welch dyes her hair. She has been seen with different shades of red over the years, suggesting that she frequently colors her hair.
However, there is no official confirmation from Florence herself about whether or not she dyes her hair. Some fans believe she may have a natural reddish hue, which she enhances with color.
Ultimately, whether or not Florence Welch dyes her hair is a matter of speculation.