Humidity Blocker get rid of fizz and lock out humidity with this protective finishing spray. A light hold aerosol spray that delivers protection from volume-deflating humidity in a fine mist. This unique protective finishing spray creates an invisible protective barrier around each of your hair strands to lock out humidity, eliminate frizz, and keep your volume and curls intact all day. This product was previously known as Joico Design Humidity Blocker. To use: Hold 8-12 inches away from styled hair and spray.