The Shampoo Effect by Jenny Jackson.jpg
The Shampoo Effect by Jenny Jackson.jpg

The Shampoo Effect by Jenny Jackson

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A New York Times bestselling author's frothy, funny follow-up to a phenomenon—where old friends, old secrets, and one irresistible outsider collide in a seaside town about to boil over.

A READ WITH JENNA BOOK CLUB PICK as featured on TODAY. Coco Mellors calls it "brilliant," and The New York Times declares it "the platonic ideal of a beach read."

Rent new hardcover on Trove: $11.99 - Each rental copy can be rented for 30 days. If you love the book and decide to keep it, the remaining balance applies.

Buy new hardcover on Trove: $30.00

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About the book:

When Caroline Lash arrives in Greenhead, Massachusetts, she falls hard for Van Whittaker—fleece-clad, kayak-obsessed, and impossible not to love. Van's childhood friend group welcomes her in: Bailey, his magnetic ex; Augusta, old money and sharp-tongued; and Fran, worn down by a house full of boys.

Together they drink on houseboats, sunbathe with their kids, and play the same games they've played for years. But when Bailey discovers she's pregnant with Van's baby, the group's fragile equilibrium cracks.

Cast out and heartbroken, Caroline does something no one saw coming—and the fallout exposes secrets the whole town of Greenhead has been keeping.

From the New York Times bestselling author of Pineapple Street, The Shampoo Effect is dazzlingly funny, sexy, and sharply observed—a story about old friends finally growing up, whether they like it or not.

A New York Times bestselling author's frothy, funny follow-up to a phenomenon—where old friends, old secrets, and one irresistible outsider collide in a seaside town about to boil over.

A READ WITH JENNA BOOK CLUB PICK as featured on TODAY. Coco Mellors calls it "brilliant," and The New York Times declares it "the platonic ideal of a beach read."

Rent new hardcover on Trove: $11.99 - Each rental copy can be rented for 30 days. If you love the book and decide to keep it, the remaining balance applies.

Buy new hardcover on Trove: $30.00

___________________________________________

About the book:

When Caroline Lash arrives in Greenhead, Massachusetts, she falls hard for Van Whittaker—fleece-clad, kayak-obsessed, and impossible not to love. Van's childhood friend group welcomes her in: Bailey, his magnetic ex; Augusta, old money and sharp-tongued; and Fran, worn down by a house full of boys.

Together they drink on houseboats, sunbathe with their kids, and play the same games they've played for years. But when Bailey discovers she's pregnant with Van's baby, the group's fragile equilibrium cracks.

Cast out and heartbroken, Caroline does something no one saw coming—and the fallout exposes secrets the whole town of Greenhead has been keeping.

From the New York Times bestselling author of Pineapple Street, The Shampoo Effect is dazzlingly funny, sexy, and sharply observed—a story about old friends finally growing up, whether they like it or not.

  • Publisher: Pamela Dorman Books

    Title:The Shampoo Effect: A Novel

    Author: Jenny Jackson

    On Sale Date: June 30, 2026

    ISBN 13: 9798217059959

    Format: Hardcover

    Retail Price: $30.00

    BISAC: Fiction / Women (+2)

    Page Count: 352

    Dimensions: 9.3 in H | 6.4 in W | 1.2 in T

    Weight: 1.1 lb

  • Jenny Jackson is the New York Times bestselling author of Pineapple Street, which sold more than 350,000 copies, spent six weeks on the New York Times bestseller list, and was a Good Morning America book club pick and a best book of the year according to NPR, Time, Elle, Town & Country, Vogue, and USA Today. A graduate of Williams College and the Columbia Publishing Course, she is vice president and editorial director of fiction at Alfred A. Knopf. Raised in Ipswich, Massachusetts, she now lives in Brooklyn Heights with her family.

  • Early readers describe The Shampoo Effect as a book that sneaks up on you—laugh-out-loud funny on the surface, but genuinely moving underneath.

    • Several booksellers highlight its sly literary lineage, noting how the novel plays with and updates John Updike's Couples for a millennial cast of characters.

    • Readers keep returning to the tangled, believable friend group, praising how the novel captures what it means to be a mother, partner, and individual all at once.

    • More than one early reviewer predicts big things ahead, calling it a lock for best-of-the-year lists and celebrity book club picks.

This book is for you if:

  • You love beach reads with real emotional bite, not just fluff.

  • You're a sucker for a tight-knit friend group whose secrets are about to unravel.

  • You loved Pineapple Street and want more of Jenny Jackson's wicked social wit.

  • You want a summer novel that's as sexy and gossipy as it is genuinely moving.

  • You're drawn to stories about messy midlife friendships—love, money, and all the things left unsaid.

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  • We believe hardcover books are simply too expensive, especially new releases. Trove gives you a lower-cost option to read new books immediately. Rent first, then return it when you are done — or keep it if you love it!

  • Renting from Trove lets you read a new hardcover without paying the full purchase price upfront. Choose Rent New, read the book for up to 30 days per copy, then return it or keep it. If you keep it, the remaining balance applies as if you bought it outright.

  • Yes! Trove offers new hardcover books for rent or purchase. Renting gives readers access to new releases at a lower upfront price than buying the hardcover outright.

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