Achieve a professional, frizz-free finish with the Pureology Smooth Perfection Smoothing Serum. Formulated for normal to thick, colour-treated hair, the serum provides long-lasting frizz control and seals the hair's cuticles to lock in natural moisture levels. Delivers heat protection to defend against damage caused by styling tools and can be applied to dry hair for a sleek, calm finish, or damp hair for the perfect blow dry. Enhances shine and restores smoothness from root to tip.