85% full Redken's Acidic Bonding Concentrate 24/7 Night & Day Serum is a revolutionary bonding serum that repairs and strengthens processed, damaged hair. This hair treatment works 24/7 to nourish and revitalize your hair. BEST FOR: • Processed, damaged hair • Suitable for color-treated hair​ BENEFITS • Strengthens hair and repairs daily damage overnight • Delivers 9x stronger hair, 3x more hydration, and 89% less breakage** • Reduces frizz by 72% after just 8 hours of use* • 92% of users agree that their hair looks and feels healthy after 24 hours • Helps maintain color-treated hair and protect from damage caused by heat styling, environmental stressors, and daily wear and tear • Scented with a calming lavender fragrance for a relaxing overnight hair treatment experience