Redken Acidic Bonding Concentrate Leave-In Conditioner — bond rebuilding, color protection & heat defense

Redken Acidic Bonding Concentrate Leave-In Conditioner is a lightweight leave-on repair treatment that rebuilds weakened hair bonds, reduces breakage, protects color, and shields strands from heat.

If your hair shows signs of chemical or mechanical damage from coloring, styling, heat tools, sun, or wind, this professional-grade leave-in offers targeted support. Formulated with citric acid and Redken's bonding care complex, the creamy, spreadable formula is designed to coat strands with minimal product for visible smoothing and strengthened fiber integrity. Use it as the third step in the Acidic Bonding Concentrate system or alone after washing to extend color vibrancy and improve manageability.

How does this leave-in rebuild and strengthen damaged hair?

The formula combines an acidifying agent with a bond-building complex to reinforce weakened internal links in the hair shaft and smooth the cuticle surface. Results reported in Redken testing include less visible split ends and reduced breakage when used as directed in the system.

• Citric acid helps tighten the hair cuticle for a smoother finish.
• Bonding care complex supports internal strand resilience.
• Creamy, concentrated texture coats hair with less product.

Will this product protect my color and reduce fade?

Acidic formulations help close the hair cuticle, which can preserve salon color and reduce premature fading. This leave-in is designed to support color-treated hair without adding weight, maintaining vibrancy between salon visits.

• pH-lowering ingredients minimize color molecule loss.
• Lightweight conditioning prevents dulling or buildup.
• Safe for use on color-treated and highlighted hair.

Can it protect hair from heat styling and reduce split ends?

This leave-in provides thermal protection and leaves hair smoother, which helps limit mechanical stress during brushing and styling. The concentrated cream delivers moisture and film-forming agents that shield strands up to high temperatures.

• Heat protection rated up to 450°F for styling tools.
• Improves slip to reduce friction-related breakage.
• Helps minimize the appearance of split ends with consistent use.

How should I use it for best results?

Apply to towel-dried hair in small amounts, starting with a dime-sized portion and increasing as needed. Distribute evenly from mid-lengths to ends, and style as usual; no rinse required. For maximum strengthening, use as step 3 in the Acidic Bonding Concentrate three-step routine.

• Start with a small amount; the formula is concentrated.
• Work through damp hair focusing on damaged areas.
• Combine with heat tools when needed for protection and shaping.

Who is this for: Redken Acidic Bonding Concentrate Leave-In Conditioner suits anyone with dry, chemically processed, heat-stressed, or otherwise weakened hair seeking a lightweight, professional leave-on that rebuilds strand strength, enhances smoothness, and helps protect color. It is appropriate for all hair types and safe for color-treated locks looking to restore resilience without heaviness.

Ingredients

AQUA / WATER / EAU DIMETHICONE CETEARYL ALCOHOL AMODIMETHICONE PHENOXYETHANOL POLYQUATERNIUM-37 DIMETHICONOL PARFUM / FRAGRANCE PROPYLENE GLYCOL DICAPRYLATE/DICAPRATE TRIDECETH-5 STEARETH-20 CETYL HYDROXYETHYLCELLULOSE GLYCERIN CITRIC ACID LIMONENE PPG-1 TRIDECETH-6 TRIDECETH-10 SODIUM HYDROXIDE CHLORHEXIDINE DIGLUCONATE SORBITAN OLEATE ACETIC ACID LINALOOL CITRONELLOL CITRAL EUGENOL