Teen charged after NSW hair salon death

A teenager has been charged with murder after allegedly stabbing another young man in a Sydney hair salon.

Police say a 20-year-old man died in Liverpool Hospital about 5pm on Friday, more than four hours after he was stabbed at a salon in Bossley Park.

The accused assailant, who is 18, was arrested at a home on nearby Tallowood Crescent.

He's been refused police bail ahead of an appearance at Parramatta Bail Court on Saturday.