Popsugar Beauty Celebrity Hair Demi Lovato's Hair Color Evolution Demi Lovato Ditched Brunette Hair For a Teal-Blue Hue October 6, 2014 by Marina Liao View On One Page Photo 5 of 13 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 5 May 2014 Demi dyed her long locks half blond back in May with one side shaved into an undercut. Previous Next Start Slideshow Demi LovatoInstagramCelebrity HairHairHair Color