Saweetie’s hair “turned into goo” thanks to a botched dye job. The 30-year-old singer’s usual hairstylist was booked out but she was keen to change her look by dying her fringe blonde as a teenager, only for it to go badly wrong. Asked her biggest style regret, she told W magazine: “Probably dyeing my bangs blonde. My advice to all the hair girls is: if your trusted hairstylist isn’t available, please wait for them… “I went to a random hair salon and they put the blonde in for too long and I felt my scalp burning. “My hair literally turned into goo. It was so traumatic.” The ‘Best Friend’ si…