Namaste Moisture Shield Hair Guard by Namaste Labs. Humidity and perspiration can wreak havoc on both thermal-styled natural hair and relaxed hair. Now stylists can offer their customers a Shield and Seal Treatment to protect the hair with Namasté Moisture Shield Hair Guard. Moisture Shield Hair Guard Facts...Heat activated, Seals the cuticle, Locks in moisture, blocks humidity, Helps eliminate frizz, Shine booster, Designed for natural & relaxed hair.