YOLU Relax Night Repair Tester Set is a premium nighttime hair care duo designed to repair and protect hair from friction damage while you sleep. This Japanese formula features Night Keratin and CMC-like repair ingredients that penetrate deeply to strengthen hair fibers, balance moisture levels, and smooth frizz and unruliness. Enriched with Persian silk tree bark extract, tall mallow flower, and corn flower extracts, it nourishes the scalp and repairs accumulated damage from heat styling, coloring, or perms. The gentle, silicone-free treatment leaves hair silky, manageable, and beautifully smooth by morning. Best suited for those with dry, frizzy, or damaged hair seeking intensive overnight repair and a calming pear and geranium aromatherapy experience.​ [Tester]