A SCHOOLGIRL was left "looking like an alien" after an extreme allergic reaction to a hair dye. Abigail Colbourne, 15, dyed her brown locks darker but didn't do a patch test, as advised.The Clairol dye caused huge swelling. Abigail, of Sydenham, South London, said: "My eyes were glued together, and my head swelled up. It was terrifying." Docs reduced the swelling but mum Joanna Leech said: "People should be aware of the effects of these dyes." Clairol said such reactions "are very rare". And after... Spoiler Spoiler