Redken Acidic Bonding Concentrate 24/7 Night & Day Serum — Lavender, Repairing Leave-In for Damaged Color-Treated Hair

Redken Acidic Bonding Concentrate 24/7 Night & Day Serum is a lightweight leave-in treatment that repairs weakened hair bonds, reduces frizz, and strengthens strands both day and night.

Designed for chemically treated, bleached, or otherwise damaged hair, this concentrated serum blends citric acid, polyglutamic acid and squalane to penetrate multiple layers of the hair shaft and restore resilience. It works continuously—apply on damp or dry hair and let the formula reinforce bonds, hydrate, and shield against humidity and everyday wear. The lavender-scented treatment targets breakage and split ends while helping color-treated hair retain its integrity.

How quickly will I notice smoother, stronger hair?

Visible smoothing and improved manageability can appear after the first application, with progressive results over repeated use. Redken reports marked improvements in smoothness after one use and amplified benefits after several applications as the bonding system rebuilds weakened areas.

• Results visible immediately: reduces surface roughness and frizz.
• Increases smoothness progressively with continued use.
• Formulation supports long-term bond reinforcement for weakened strands.

What ingredients repair the hair and how do they work?

The serum combines citric acid to help the formula penetrate deeper cuticle layers and polyglutamic acid plus squalane to lock in hydration and strengthen the fiber. Together they reconstruct compromised bonds, add moisture, and create a protective layer against humidity and mechanical stress.

• Citric acid: aids deeper absorption into multiple hair layers.
• Polyglutamic acid: holds moisture and contributes to structural repair.
• Squalane: seals and smooths the cuticle to reduce breakage and frizz.

Can I use this serum with color-treated or heat-styled hair?

Yes—this leave-in is formulated to be safe on color-treated hair and to guard strands from heat styling and environmental aggressors. It helps maintain color vibrancy by strengthening hair fibers and reducing the likelihood of breakage that can cause color to fade unevenly.

• Protects against heat and daily styling stress.
• Supports color retention by reinforcing fragile areas.
• Provides humidity control for up to three days to minimize frizz.

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

Work a small amount through mid-lengths and ends on either damp or dry hair; use more on very porous or severely damaged hair. For nightly reinforcement, apply before bed to let the formula act while you sleep; during the day, distribute lightly to tame frizz and add protection before styling.

• Apply to clean, damp or dry hair focusing on mid-lengths and ends.
• Use a generous amount for high-damage or bleached hair.
• Safe to layer under styling products or use alone for a lighter finish.

Who is this for: Redken Acidic Bonding Concentrate 24/7 Night & Day Serum is made for people with processed, bleached, color-treated, or chemically relaxed hair who want a continuous, non-greasy repair system. It suits those seeking a lightweight daily leave-in that reduces breakage, improves smoothness, and provides humidity resistance without weighing hair down. Ideal for anyone looking to strengthen fragile strands and reduce split ends while keeping color-treated locks looking healthier.

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