Bad Hair Day

Bad Hair Day is the eighth book in the Franny K. Stein book series.

Plot
Franny decides to experiment with cosmetics after her mother asks her why it doesn't bother her that Igor is ugly, a point Franny doesn't get because she sees Igor as beautiful. Franny's experimentation leads to using a growth formula on her hair, enabling her to move her pigtails and change the shape of her hair at will.

Franny wakes up one morning to see that her pigtails are gone, later learning that her pigtails detached themselves from her head and engorged themselves on the growth formula, turning into giant pig-like monsters and going on a rampage where they devour all the hair they can find.

Franny follows the path of destruction by creating a literal ponytail from her hair and Igor tries to help, only for the dog to get swallowed alive by one of the giant pigtails. When it looks like Franny is at the giant pigtails' mercy, Igor later turns out to still be alive, albeit bald, when he snips his way out of the pigtail that ate him, having cut off his own hair to avoid getting swallowed again.

Franny uses her cosmetic experiments to save the day when she enlarges Igor's eyelashes to enable him to fly and trick the pigtails into twisting around each other before she uses an elongated fingernail to cut the pigtails open and free the hairy animals they had eaten alive.

After all is said and done, Franny is able to reattach her pigtails and uses the leftover hair and some of Igor's fur to make a coat for her mother, then sends Igor to run some errands while he can still use his eyelashes to fly.