Redken Acidic Bonding Concentrate 24/7 Night & Day Serum — Lightweight Repair for Damaged, Color-Treated Hair, Anti-Frizz

Redken Acidic Bonding Concentrate 24/7 Night & Day Serum is a lightweight leave‑in treatment that repairs and strengthens damaged, color‑treated or chemically processed hair while controlling frizz day and night.

Designed for hair that has been weakened by bleaching, chemical services, heat styling or everyday stressors, this serum uses a targeted acidic bonding system to restore integrity and smooth the hair surface. The formula blends citric acid to reach multiple hair layers with polyglutamic acid and squalane for ongoing protection and hydration, delivering visibly smoother, stronger hair after regular use. Apply to mid‑lengths and ends on clean, damp or dry hair to support continuous repair and manageability.

How quickly will I notice smoother, stronger hair?

Visible improvement can appear after the first application, with cumulative gains over multiple uses. The serum smooths the cuticle and helps rebuild bonds that have been compromised by chemical or thermal damage, so texture and strength improve as you continue using it.

• Clinically shown results after repeated use for improved smoothness and strength
• Immediate anti‑frizz effect for up to 72 hours of humidity resistance
• Use daily or overnight for continuous bond support and visible repair

What are the key actives and how do they work on damaged hair?

The formulation combines an acidic bonding technology with hydrators and lipids to both rebuild internal structure and seal the hair surface. Citric acid helps penetrate multiple layers, while polyglutamic acid fortifies the inner network and squalane locks in moisture and shine.

• Citric acid: targets deeper layers to support bond repair
• Polyglutamic acid: reinforces hair structure for long‑lasting strength
• Squalane: replenishes hydration and helps smooth cuticles to reduce breakage

How should I use the serum for day and night routines?

The product is formulated for flexible use—apply a small amount to damp hair before styling for protection and manageability, or smooth it through dry hair at night to let the active ingredients work while you sleep. Focus on mid‑lengths and ends where damage and split ends are most visible.

• Daily: distribute on damp hair before blow‑drying or styling for frizz control
• Overnight: apply to dry hair and leave in for extended repair time
• Avoid roots if you prefer a lighter, non‑greasy finish

Will this serum help colored or chemically treated hair?

Yes—its protective and strengthening ingredients are intended to support color longevity and reduce damage from processing. By reinforcing hair bonds and improving hydration, it helps hair retain a healthier look and feel after treatments.

• Helps maintain color vibrancy by minimizing breakage and surface roughness
• Protects against heat and environmental stressors that can fade or weaken hair
• Scented with calming lavender for a relaxing treatment experience

Who is this for: Ideal for people with dry, fragile, bleached or chemically treated hair who want a lightweight leave‑in option to repair breakage and control frizz. It suits clients seeking daily protection and those who prefer a flexible product that works both as a daytime styling aid and an overnight restorative serum.

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