What if every relationship carried traces of the one before it?
In Jenny Jackson’s The Shampoo Effect, a close-knit circle of lifelong friends in seaside Greenhead, Massachusetts, discovers that old secrets never stay buried for long. When Caroline, a young writer hoping to escape her famous mother’s shadow, enters their world, she becomes entangled in decades of complicated friendships, romances, marriages, and rivalries.
The group calls it the “shampoo effect”: just as a second wash creates more lather, unresolved feelings from the past can make even small conflicts explode in the present. And when Caroline turns what she has learned about her new friends into a revealing short story, private betrayals suddenly become public—and relationships begin to unravel.
Funny, sharp, and emotionally messy, The Shampoo Effect explores friendship, parenthood, identity, ambition, and whether people can ever truly start over.
Read our Instaread summary to discover what happens when everyone’s history finally catches up with them.
