A good hair oil can make a noticeable difference when your hair is looking dry, frizzy or lacking shine. Much like a good leave-in conditioner, the right formula can help smooth the hair, tame flyaways and give lacklustre lengths a glossy finish, while making split ends and damage from heat styling or bleaching look less obvious.
According to hair expert and celebrity stylist, Lorraine Dublin (who has worked with the likes of Serena Williams and Cynthia Erivo), hair oils can be useful for much more than simply adding shine. "I reach for oils for everything from scalp treatments to protective styles like a slick-back, or even when using extensions," she tells me. However, Dublin warns that “some oils sadly just sit on top of the hair; they don’t always provide enough moisture".