Redken Acidic Bonding Concentrate 24/7 Night & Day Serum 1.6 fl oz – Lightweight Repair & Anti-Frizz

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

Designed for chemically treated, bleached, or visibly damaged hair, this concentrated serum blends citric acid, polyglutamic acid, and squalane to rebuild and shield hair fibers. Use it on damp or dry lengths and ends for immediate smoothing and long-term fortification. It promises measurable improvements in smoothness and breakage reduction when used regularly, and it helps maintain color vibrancy while resisting humidity.

How does this serum repair and protect hair bonds?

The formula targets weakened linkages inside the hair fiber to restore structural integrity. Citric acid helps the treatment penetrate multiple layers of the hair cortex, while polyglutamic acid and squalane form a protective matrix that reduces breakage and preserves moisture.

• Multi-layer penetration to reach inner hair structure
• Polyglutamic acid creates long-lasting protection
• Squalane seals and smooths the hair surface
• Reduces visible split ends and increases resistance to breakage

When and how should I apply the Night & Day Serum?

Apply a generous amount to mid-lengths and ends on either clean, damp hair or on dry strands for ongoing protection. You can use it as part of your morning styling routine and again at night for continuous repair; the lightweight texture absorbs quickly without weighing hair down.

• Use daily for best results — morning and/or night
• Work through mid-lengths and ends, avoiding the roots if you prefer a non-greasy finish
• Suitable on damp or dry hair before styling or sleeping
• Pairs well with heat tools for added protection during styling

What performance results can I expect and how fast?

Users often notice immediate smoothing and reduced frizz after the first use, with progressive improvements in strength and texture after repeated applications. Independent testing highlights increased smoothness, greater hydration, and a decrease in breakage when used consistently.

• Visible smoothing from the first application
• Progressive strengthening and hydration over repeated use
• Humidity resistance to help control frizz for up to several days
• Clinically shown improvement in breakage and strand resilience

Can this serum be used on color-treated or chemically processed hair?

Yes — the formulation is appropriate for color-treated, lightened, and chemically altered hair. It helps protect color from everyday stressors while restoring weakened areas, supporting a healthier-looking finish without dulling shine.

• Safe for color-treated and bleached hair when used as directed
• Supports color longevity by guarding against damage
• Non-greasy texture keeps hair light and vibrant
• Lavender scent for a pleasant, calming application experience

Who is this for: Redken Acidic Bonding Concentrate 24/7 Night & Day Serum is made for anyone with compromised hair — from salon-processed and heat-styled hair to naturally fragile or dry strands. If you want a lightweight, leave-in treatment that works continuously to repair bonds, reduce frizz, and add resilience while preserving color, this serum fits into daily routines for both morning styling and overnight repair.

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