Lock Those Curls in Style Lock the curls in your hair with this Tresemme Thermal Creations Curl Activator Spray. It defines and freezes curls formed with the heat from a curling iron. This spray combines flexibility and holding power for beautiful, long-lasting ringlets.Defines and freezes curls made with curling ironCauses long-lasting ringletsAvoids frizz and stubborn runawaysIt has been specially formulated to work with heat styling products. Just For You: All hair types A Closer Look: The vitamin-enriched formula of the spray provides moisture to the curls and helps prevent flyaway and frizz. The lightweight holding polymers encourage long-lasting ringlets. Get Started: Mist evenly and liberally from roots to ends on dry hair. Quickly blow-dry the spray to set for one minute so that the heat stops any tackiness and wetness for smooth styling. Then, curl section by section to create defined waves. Also use as a light finishing spray to tame frizz and add hold to ringlets.