Healthy, shiny, soft and silky are just some of the ways we would describe the ideal state of our hair. There’s hair dying and blowdrying, however, along with environmental factors like the sun that stand in the way of this vision of perfection. Regardless of hair type, we’ve all had to deal with split ends, frizz or dull color at one point or another. While there are targeted solutions for every concern, the latest secret weapon in our beauty arsenal is a cure-all overnight treatment to revive locks. While we’re getting our beauty sleep on and our overnight face masks are working away, why not repair hair, too? We’ve rounded up five incredible overnight hair treatments that work overtime — with zero effort required on your end — for restored strands by sunrise.