The Fairly OddParents (2001)

S6E2 Hairicane

Title: Hairicane Plot: Frustrated by his dad's terrible haircuts, Timmy makes a wish for hair that is not only unbreakable but also has its own personality and cannot be trimmed. To his shock, his hair springs to life, growing wildly and threatening to wreak havoc across Dimmsdale. At the same time, Wanda brings Poof to the fairy baby barber shop for his very first haircut, adding to the chaos in their magical world.