The Shampoo Effect

THE INTERNATIONAL BESTSELLER & TIKTOK SENSATION A READ WITH JENNA BOOK CLUB PICK A VOGUE 'BEST BOOK OF 2026' An accidental pregnancy turns a tight-knit group on its head in this witty and irresistible summer novel from the New York Times bestselling author. Perfect for fans of Romantic Comedy and The Wedding People. ‘Funny, drama-fuelled, and full of Jackson's breezy wit…Brilliant’ COCO MELLORS, Sunday Times bestselling author of BLUE SISTERS ‘A delicious, unputdownable portrait of a group of friends navigating love, marriage, and young parenthood…I loved it.’ BELLE BURDEN, bestselling author of STRANGERS 'So breezily readable and laugh-out-loud funny' CATHERINE NEWMAN, bestselling author of WE ALL WANT IMPOSSIBLE THINGS 'The platonic ideal of a beach read: fun and fast-paced' New York Times OVER ONE LONG SUMMER, WHO KNOWS WHAT MIGHT COME OUT IN THE WASH? When writer Caroline Lash arrives in Greenhead, she falls immediately for its scenic beaches and New England charm – and even harder for Van Whittaker, a gorgeous, fleece-wearing, litter-collecting, kayak enthusiast. She meets his friends: Augusta, old money and uptight; Fran, drowning in everyone else’s problems whilst keeping two kids (and an inebriated husband) afloat; and Bailey, who is sexy, confident… and inconveniently pregnant with Van’s child. Determined nothing will dull the shine of her new romance, Caroline joins the friends as they run wild through Greenhead, drinking on houseboats, gossiping on beaches while their children paddle, and playing risky games. It seems the fun will last forever – until it doesn’t. As decades-old friendships and marriages begin to fracture, Caroline’s place in their world is called into question.