- Sea-Salt Spray. Medium control sea salt hair spray for beachy waves. This sea salt hair spray adds instant texture, creating a tousled beachy look. Creates tousled texture. Provides lightweight body and movement. A matte finish helps achieve a classic beach wave look. Magnesium Sulfate. Also known as epsom salt. Highly water soluble and hygroscopic (absorbs moisture from the air), adding instant texture to create a tousled beachy look. TIP: To achieve loose waves in straight hair, and enhanced definition in wavy hair, mist liberally onto damp hair and scrunch. Continue to reapply until desired texture is achieved. Shake well. Mist on damp hair in sections and air-dry. Allow to air dry or diffuse. Reapply throughout the day to re-animate waves.