If your hair is experiencing excessive breakage, split ends, dryness, brittleness, lack of elasticity, dullness, increased frizz, or damage from chemical/heat styling, it indicates a need for bond repair.

Hair bond repair is a scientific approach to reinforce internal hair bonds broken by daily stressors, chemical processes, and heat. Redken's Acidic Bonding Concentrate system is formulated to reverse damage and restore hair integrity.

The system uses citric acid and a bonding care complex to penetrate the hair shaft and rebuild broken bonds caused by chemical services, heat styling, and environmental damage. The pH-balancing formulas seal the cuticle for improved strength and shine.

Acidic Bonding Concentrate provides stronger hair, immediate results*, including 2x less breakage**, 10x smoother hair** and heat protection up to 450F***.

*vs. non-conditioning shampoo
**Acidic Bonding Concentrate shampoo & conditioner vs. non-conditioning shampoo
***with continued use

Many users report seeing and feeling immediate improvement after just one use, with hair feeling stronger, smoother, and more conditioned, while consistent use over several weeks yields progressively better and longer-lasting results.

For optimal hair bond repair, use the Redken Acidic Bonding Concentrate system – including the Shampoo, Conditioner & Leave-In Treatment - every time you wash your hair to continuously reinforce bonds and protect against damage. For severely damaged hair, swap the Conditioner for the 5-Minute Liquid Mask once a week.

Amplify results with Acidic Bonding Concentrate 24/7 Night & Day Serum to combat daily damage overnight and the Hair Bandage Balm to visibly seal split ends up to 96*.

*Instrumental evaluation of split ends partially or completely closed with two applications of leave-in vs. before application

The Shampoo, Conditioner & 5-Min Liquid Mask are used on wet hair. The Leave-In treatment is applied to towel-dried hair, and the 24/7 Night & Day Serum and Hair Bandage Balm can be applied to either damp or dry hair.

Yes, the collection is designed for all damaged hair types, including chemically-treated, color-treated, heat-damaged, and sensitized hair. For wavy, curly, and coily hair types, we recommend the Acidic Bonding Curls range, which offers bond repair while restoring the curl pattern.

Yes, the Shampoo, Conditioner, Leave-In Treatment, 5-Min Liquid Mask, 24/7 Night & Day Serum and Hair Bandage balm are all sulfate-free formulas designed for gentle yet effective repair.