My 12-year-old daughter has very long (waist-length) wavy light-brown hair and is obsessed with wanting to dye it blonde. I'm really worried she is going to damage her hair, as I did when I was younger (not with dye though). Are there any products out there that could lighten her hair but won't damage/burn it? It's ok if it's just temporary for the summer. I know that it's difficult to get blonde hair without bleaching it, especially if you start off with darker hair, but hers isn't really dark - it's on the lighter side of brown.