Lilo & Stitch: The Series (2003)

Season 1: Episode 3

Lilo is upset when Mertle gets a nice-looking fancy hairdo. But when she encounters a hair-eating experiment, Clip, she decides to get her revenge on Mertle by placing it in her bedroom with the plan of ruining Mertle's hair. But the plan runs amock and the experiment eats Mertle's mom's hair instead, and now the experiment is loose on the island. Now Lilo and Stitch must track down the experiment before everyone goes bald!