- Up to 72-hour weather-proofing for finished looks. Acts like an umbrella for the hair. Shields hair from humidity and frizz for up to 72 hours. Weightless shine spray. Made with Flexible sealing compounds: Trisiloxane – provides shine, and Dimethicone - Polymer that protects against humidity. Spray 10-12" (25-30 cm) from dry hair as a final umbrella for humidity over the style.