Redken Hot Sets 22 Thermal Setting Mist - Heat Protectant Spray. The maximum-control spray helps create heat styles with true staying power. Spray the setting mist on damp or dry hair to achieve a crisp hold when using blow dryers, curling irons or straighteners and get heat protection up to 450 degrees. Benefits: Provides long-lasting shine. Offers maximum control. Protects hair from heat up to 450 degrees. Produces lasting hold. For use on damp or dry hair.