Redken's Acidic Bonding Concentrate 24/7 Night & Day Serum repairs daily damage overnight with 24/7 repair. Citric acid penetrates 7 layers deep and strengthens hair. Polyglutamic acid with a high leave-in concentration magnetizes to hair for long-lasting protection and repair. 
 
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
*Continued use of system of Acidic Bonding Concentrate shampoo, conditioner, and serum vs. untreated hair ​
**System of ABC shampoo, conditioner, and serum vs. non-conditioning shampoo​
**Based on consumer test results, system of abc shampoo, conditioner, and serum