YOLU Relax Night Repair Treatment is a Japanese overnight hair treatment designed to smooth frizz, tame waves and restore moisture balance while you sleep. It uses a “night repair” formula with keratin and CMC-like ingredients to repair damage from within and leave hair softer and easier to style by morning. Ideal for dry, unruly or humidity-prone hair, it delivers a silky, lightweight finish with a relaxing pear and geranium scent that enhances your nighttime routine.​