so WHO was going to tell me that you're supposed to hairspray your hair after straightening it to keep it SHINY and frizz free...

The video likely worked because it presented a simple, actionable hair care hack that addresses a common problem (frizz and lack of shine after straightening). The relatable on-screen text and enthusiastic reaction from another creator likely contributed to its shareability.

The video features a woman demonstrating a hair care tip, suggesting to hairspray straightened hair to maintain shine and prevent frizz. Another person reacts enthusiastically to this tip, indicating it's a well-known but effective hack.