Jason Volumising Lavender Shampoo Adds Body to Fine Hair. Pure natural sls free shampoo. Jason Volumising Shampoo gently cleanses fine, limp hair, adding lift without dryness. Lavender and Sweet Almond Extract weightlessly strengthen and fortify hair while Wheat Protein amino acids add all-day volume. With renewed body, bounce and shine, your hair is noticeably uplifted. Vegetarian.