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The Shampoo Effect

A Novel

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Pub Date Jun 30 2026 | Archive Date Aug 29 2026

Viking Penguin | Pamela Dorman Books


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Description

An ambitious young woman insinuates herself into a tight-knit social set, shaking up friendships and marriages in a small seaside town. A frothy novel of love, money, sex, and friendship, from the New York Times bestselling author of Pineapple Street (“Laugh-out-loud-good.” —Harper’s Bazaar)

When Caroline Lash arrives in Greenhead, Massachusetts, she falls head-over-heels for Van Whittaker, a fleece-wearing, litter-collecting, kayak enthusiast with long, floppy hair and the personality of a Border collie. Born and raised in this picturesque coastal village, Van runs with the same crowd he did as a kid: His ex-girlfriend, Bailey, a beautiful girl who attracts men like moths to a flame; Augusta, old money, horsey, and snobbish; and Fran, surrounded by brothers and sons, too fed up with boys to ever consider marrying one.

Together, the group runs wild through the marshes, beaches, and bars of Greenhead, drinking on houseboats, spending long afternoons sunbathing with their children, and playing games the way they always have. But when Bailey discovers that she is pregnant with Van’s baby, the delicate balance of the group’s friendship is thrown off. Soon Caroline is cast out of the circle and what she does next—in a potent mix of fury and heartbreak—exposes long-held secrets and works the entire town of Greenhead into a lather. Dazzlingly funny, sexy, and as juicy as it is astute, The Shampoo Effect is a story of late-night parties, early mornings with small children, the dawn of midlife, and a group of old friends finally growing up despite all their best efforts to the contrary.
An ambitious young woman insinuates herself into a tight-knit social set, shaking up friendships and marriages in a small seaside town. A frothy novel of love, money, sex, and friendship, from the ...

Available Editions

EDITION Other Format
ISBN 9798217059959
PRICE $30.00 (USD)
PAGES 352

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Average rating from 10 members


Featured Reviews

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Writing a book with a cast of unlikable characters can be tricky to pull off, but Jenny Jackson did it! These characters are messy, dramatic and shockingly human. I loved the New England setting and found myself unable to put this one down. If you are a fan of realistic fiction and characters you love to hate, this one is for you!

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Jenny Jackson is my new favorite author. She tells simple stories with a lot emotion, a big cast of characters, and a lot of honesty. I loved this book about how it took a complete stranger to get a group of friends to look at their lives and make some tough admissions. I can’t wait for her next book.

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The Shampoo Effect had me totally hooked! It’s gossipy, funny, and messy. Jenny Jackson captures that coastal New England vibe perfectly where everyone knows everyone, and secrets travel fast. You know drama’s coming, and you can’t look away! I loved the way the author wrote all those long and sun soaked afternoons that seem perfect until the tension starts to bubble underneath. The writing has a breezy and witty tone that’s addictive and perfect for anyone who loves stories about beautiful people behaving badly!

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This is one of the best books I've read in a long time, and I completely enjoyed it. Caroline Lash is the daughter of a world famous author (think Danielle Steele) who leaves her career as an editor when she gets a yearlong fellowship in the small Massachuesetts seaside town of Greenfield. She wants to be a writer, and this is a chance to spend a year writing a book. She even gets a cute seaside cottage to live in. Soon she meets Van, and they quickly become a couple. Caroline becomes part of Van's childhood circle of town friends, although she is always something of an outsider. Things are going so well until Bailey, Van's on and off girlfriend, becomes pregnant and Van is the father. We see Van, Caroline, and Bailey, as well as two other couples, all with young children and in their early forties and late thirties, struggle to meet the usual challenges of life and basically figure out how to grow up. The characters are so relatable, the setting is beautiful, and the story is told in a way that makes you look forward to getting back to reading it. Definitely recommend!

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