John Frieda Frizz Ease Flat Iron Spray for a 3-Day Straight with Keratin works with your hair straightener or flat iron to block out frizz as it smooths hair. Keep hair straight and smooth for up to 3 days with this pre-styling spray. Formulated with a blend of polymers with keratin protein the weightless formula wraps each strand of hair sealing in straight style without weighing it down. The result is glossy smooth hair that lasts up to 3 days or until your next shampoo. Satisfaction Guarantee. Limitations may apply.