Black hair has been an integral feature of black history - from African tribal styles to dreadlocks and the afro. As an exhibition in Liverpool investigates the significance of hair in black culture, BBC News takes a look at some of the key styles.

In early African civilisations, hairstyles could indicate a person's family background, tribe and social status. 

"Just about everything about a person's identity could be learned by looking at the hair," says journalist Lori Tharps, who co-wrote the book Hair Story about the history of black hair.