Redken Acidic Bonding Concentrate 24/7 Night & Day Hair Serum is Redken’s first-ever round-the-clock bonding serum, designed to repair and protect hair continuously—whether your client is asleep or on the go. Formulated with citric acid to penetrate seven layers deep* and polyglutamic acid to cling to hair for long-lasting defence, this serum targets daily damage from styling, environmental stress, and chemical processing. Ideal for clients with weakened or processed hair, the serum strengthens bonds, improves hair resilience, and delivers visible softness, frizz control, and shine from the first use. Its high leave-in concentration ensures active treatment, day and night. Penetrates 7 layers deep with citric acid to repair internal bonds Polyglutamic acid provides lasting surface protection and hydration Repairs, hydrates, and strengthens hair around the clock Protects from humidity, split ends, and breakage Safe for colour-treated and chemically processed hair How To Use: Apply to clean, damp or dry hair – do not rinse Night Use: Apply generously to mid-lengths and ends for overnight hydration and repair Day Use: Apply as needed to reduce frizz, boost shine, and condition throughout the day Designed for professional salons and stylists, this multi-functional serum is the ultimate solution for clients seeking continuous bond care and instant manageability. Use as part of the Acidic Bonding Concentrate system for best results.