Just Smooth 6 Effects Serum instantly provides 6 smoothening effects: Anti-Frizz, humidity control, taming, manageability, smoothening and natural shine. Provides 6 smoothing effects: Anti-Frizz, humidity control, taming, manageability, smoothing and natural shine. Take 1 or 2 pumps and work through towel-dried or dry lengths and ends. Leave in.