Blow Dry (2001) on Netflix

The annual British Hairdressing Championship comes to Keighley, a town where Phil, and son, Brian, run a barbershop and Phil's ex-wife, Shelly, and her lover, Sandra, run a beauty salon. Phil and Shelly haven't talked in ten years, since she bolted; she's just found out her cancer is terminal; and Ray Roberts, the reigning hairdressing champion, blows into town taunting Phil for retreating from competitive styling into barbering. Roberts also brings his daughter, Christina, who remembers Brian from when she was a little kid. Everything's set: Brian decides to enter the competition with his mom and Sandra; will Phil join in? Ray wants to win at any cost; will Christina go along?