Wiktionary
n. A thick hairstyling product containing wax, used to assist with holding the hair.
Wikipedia
Hair wax is a thick hairstyling product containing wax, used to assist with holding the hair. In contrast with hair gel, most of which contain alcohol, hair wax remains appliable and has less chance of drying out. Consequently, hair wax is currently experiencing an increase in popularity, often under names such as pomade, putty, glue, whip, molding gum, or styling paste. The texture, consistency, and purpose of these products varies widely and each has a different purported purpose depending on the manufacturer. Traditionally, pomade is a type of hair wax that also adds shine to one's hair.
Hair wax has been used for many years and a waxy soap-like substance was invented by the ancient Gauls as a hair styling agent and was not used as a cleaning agent until many years later.