Palmer's Cocoa Butter Formula Tummy Butter for Stretch Marks is widely recommended for stretch marks during and after pregnancy or weight loss. Paraben and Phthalate Free. Palmer's Cocoa Butter Formula Tummy Butter for Stretch Marks is an ultra-concentrated night-time treatment specifically designed for pregnancy stretch marks. Made using Palmer's specialist blend of Pure Cocoa Butter and Shea Butter, Natural Oils, Collagen, Elastin, and Lutein, known as Bio-C-Elaste. Key Features of Palmer's Cocoa Butter Formula Tummy Butter for Stretch Marks: Intensive Treatment Dermatologist Tested Advanced formula with Bio-C-Elaste Paraben and Phthalate Free.