The song "(It's) Hairspray" is performed by James Marsden, who plays Corny Collins, and The Council Members in the musical film "Hairspray." This song is a promotional jingle for a fictional hairspray product called Ultra Clutch. In the context of the story, Corny Collins hosts a TV dance show called "The Corny Collins Miss Hairspray Spectacular." This show is sponsored by Ultra Clutch Hairspray, and Corny and The Council Members sing this jingle as a way to promote the product to the audience. The song emphasizes the power and importance of hairspray in a girl's life. It suggests that hairspray gives girls the confidence, attractiveness, and charm to succeed. The lyrics playfully imply that hairspray is more essential than charm, poise, intelligence, or wealth when it comes to getting attention and being successful. The song also encourages people to use Ultra Clutch Hairspray specifically. Overall, "(It's) Hairspray" serves as a catchy advertisement within the musical, highlighting the cultural significance of hairspray in the 1960s and its association with style and glamour.