Redken Acidic Bonding Serum for Damaged Hair 24/7 Night & Day — repairs bonds & reduces frizz

Redken Acidic Bonding Concentrate 24/7 Night & Day Serum is a lightweight leave-in treatment that repairs weakened hair bonds, reduces frizz, and strengthens color-treated or damaged hair around the clock.

This concentrated serum is formulated to restore chemically-treated, bleached, or heat-stressed hair with a multi-ingredient approach that rebuilds internal bonds while sealing and hydrating the hair surface. It combines citric acid to improve penetration with polyglutamic acid and squalane for lasting protection and moisture. Designed for daily use, the serum works on damp or dry hair and provides humidity resistance to help keep strands smooth and manageable for days.

How quickly will I see smoother, stronger hair?

Visible smoothing can appear after the very first application, with progressive improvement across repeated uses. Redken reports measurable smoothing and strength gains after multiple treatments, so expect immediate cosmetic benefits and cumulative repair over time.

• Noticeably smoother hair after one use
• Improved strength and reduced breakage with ongoing use
• 3x more hydration and clinically shown reduction in breakage

How does this serum actually repair damaged hair?

The formula targets internal and external damage by penetrating multiple hair layers, rebuilding weakened bonds, and then protecting the hair cuticle. Citric acid helps the active ingredients reach deeper layers, while polyglutamic acid and squalane form a protective, hydrating barrier that reduces future breakage and split ends.

• Citric acid to help ingredient penetration up to seven layers deep
• Polyglutamic acid for bond support and moisture retention
• Squalane to smooth and shield the hair surface

Can I use this daily and on color-treated hair?

Yes—this lightweight serum is safe for daily use and formulated to be compatible with color-treated hair. It helps protect color from moisture loss and heat-related stress, while the anti-frizz, humectant-rich blend supports color vibrancy and manageability.

• Suitable for daily application, morning or night
• Helps protect colored hair from environmental stress and styling
• 72 hours of humidity resistance to reduce frizz

How should I apply the 24/7 Night & Day Serum for best results?

Dispense a small amount and work through mid-lengths and ends, avoiding the roots unless additional shine is needed. Apply on clean, damp hair before styling or on dry hair to tame frizz and reinforce bonds; consistent use supports cumulative repair.

• Use on damp or dry hair—focus on mid-lengths and ends
• Can be applied day or night as a leave-in treatment
• Adjust amount based on hair thickness to avoid weighing fine hair down

Who is this for: This serum is built for people with weakened, processed, or heat-stressed hair who want a lightweight, leave-in repair product. It’s especially useful for chemically treated or bleached hair seeking bond repair, reduced breakage, and longer-lasting smoothing without heavy residue.

Ingredients

AQUA / WATER / EAU • ISOPROPYL MYRISTATE • DIMETHICONE • TRIETHANOLAMINE • AMODIMETHICONE • PHENOXYETHANOL • SQUALANE • PARFUM / FRAGRANCE • CARBOMER • POLYQUATERNIUM-4 • POTATO STARCH MODIFIED • HYDROXYPROPYL GUAR • CITRIC ACID • BEHENTRIMONIUM CHLORIDE • SODIUM POLYGLUTAMATE • COCO-BETAINE • TRIDECETH-6 • ISOPROPYL ALCOHOL • SODIUM CHLORIDE • CETRIMONIUM CHLORIDE • LIMONENE • LINALOOL • GERANIOL • CITRONELLOL • COUMARIN • ALPHA-ISOMETHYL IONONE