The Whisker's Secret (竜の髭の秘密 Ryu no hige no himitsu?) is the 156th chapter of the manga and the third chapter of the Dragon's Whisker Arc. Ranma explains that while he was in China a few year ago he came across a porridge thief. Ranma beat up the thief and ate his porridge, but the chef chasing him told him it was a special blend. Luckily Ranma was a girl, so the food had no effect on him, but when he changed back the true horror of what he had eaten was revealed. The Dragon's Whisker is a hair growth product! As a girl it has no effect, but should Ranma remove the whisker from his pigtail as a boy his hair grows uncontrollably fast.