My 19 month old came home from her dads Christmas Day after a 5 hour visit and her hair is noticeably lighter and shinier. Her hair is usually dark like mine but now its a coppery brown. I can't believe her hair could lighten up so much in a 5 hour time frame and Christmas Day here was not exactly sunny. Ex dh is odd and his gf is even weirder. She frequently changes her own hair colour so i'm starting to wonder if they have done something to her hair. My mum and friend think they may have put a rinse in it. How can I tell?