The crossword solution for the term 'IT MIGHT BE HAIR-RAISING' is GEL, which is a three letter word. GEL is a thick, jelly-like substance that is often used in hair styling products to help hold a hairstyle in place. It can also be used to add texture and volume to the hair, making it look fuller and more voluminous. Additionally, GEL can be used to create a wet look, which can be quite dramatic and hair-raising.