Acidic Bonding Concentrate 24/7 Night & Day Serum

Redken’s 24/7 Night & Day Serum is a bond repair serum that combats daily damage overnight. This day serum and night serum work 24/7 to nourish and revitalize processed, damaged hair, with a calming lavender fragrance for a relaxing overnight hair treatment experience.

Yes, the Redken Day and Night Serum is suitable for color-treated hair and helps maintain color while protecting against damage from heat styling, environmental stressors, and daily wear and tear.

Apply a quarter-sized amount to clean, dry or damp hair, more as needed and desired, without rinsing. Use it generously from mid-lengths to ends as a night serum for overnight bond repair and hydration. You can apply it again during the day for instant frizz reduction, conditioning, and shine.

Redken’s Night and Day Serum is best for processed, damaged hair, including color-treated hair.

A night hair serum works while you sleep, giving damaged strands extended time to absorb repairing ingredients. The Acidic Bonding Concentrate 24/7 Night & Day Serum strengthens hair and repairs daily damage overnight, making it a natural next step after cleansing with the Acidic Bonding Concentrate range.

This bonding serum reduces frizz by 72% after just 8 hours of use* and delivers 9x stronger hair, 3x more hydration, and 89% less breakage**, making it a strong option among serums built for both strength and smoothness.

*continued use of system of abc 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.

As an overnight hair serum, it's formulated for processed, damaged hair. Citric Acid penetrates 7 layers deep to strengthen hair*, while frizz is visibly reduced within hours, so repair and smoothing happen together.

*continued use of system of abc shampoo, conditioner, and serum vs. untreated hair.

Redken’s Day and Night Serum is one of the best hair serums with bond-building benefits. This serum's benefits come from Citric Acid combined with Redken's Polyglutamic Acid and Squalane, a high leave-in concentration blend that magnetizes to hair for long-lasting protection and repair.

The Acidic Bonding Concentrate 24/7 Night & Day Serum is vegan, with no ingredients of animal origin, and is free from parabens and SLS/SLES. It does contain silicones, Amodimethicone and Dimethicone, which are included for their haircare benefits: reducing mechanical friction, smoothing and detangling strands, controlling frizz, and making styling easier.

There's no need to worry about "over-bonding" when Redken's recommended regimens are used as directed. Redken's formulas, across both its in-salon chemical services and the Acidic Bonding Concentrate haircare range, are optimized to work as complete regimens, treating hair appropriately based on the process performed and the hair's sensitivity level.

Yes, the Acidic Bonding Concentrate 24/7 Night & Day Serum can be used on relaxed or permed hair. For relaxed hair that still retains some curl pattern, the ABCurls range may be a better-suited alternative.

Nightly tossing and turning against a pillowcase creates friction that stresses the hair fiber, leading to tangles, frizz, and fragility. A serum that absorbs, strengthens, smooths, and moisturizes while giving hair slip helps reduce these morning issues, leaving hair looking and feeling revived on waking, with results lasting up to 72 hours.

Between its 9x stronger hair, 3x more hydration, and 89% less breakage** results, plus a 72% frizz reduction in 8 hours*, it's positioned as the best night serum choice for anyone dealing with daily processed-hair damage.

*continued use of system of abc 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.

Yes. Beyond overnight use, the Redken 24/7 Serum works as a day serum, applied as needed for instant frizz reduction, conditioning, and shine on clean, dry or damp hair.

Products within the Acidic Bonding Concentrate regimen can be used individually or as part of a complete system. That said, clients with demanding, processed hair looking for internal bond repair are best served by pairing the treatments with the Acidic Bonding Concentrate Shampoo and Conditioner, since the citric acid in the Shampoo and Conditioner builds bonding strength with continued use. Used together as a full regimen, Shampoo, Conditioner, and 24/7 Night & Day Serum, the citric acid penetrates the cuticle and cortex to fortify bonds and strengthen hair from within.