Redken Acidic Bonding Concentrate Leave-In Conditioner — Bond-Building Repair & Heat Protection to 450°F

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

Designed for weak, chemically processed, or heat-stressed hair, this salon-grade leave-in conditioner blends citric acid with Redken’s Bonding Care Complex to target internal damage while smoothing the cuticle. It’s formulated to be used after cleansing and before styling: apply to damp mid-lengths and ends, leave in, and style as usual. The formula helps preserve hair color vibrancy and offers thermal protection up to 450°F, making it a practical daily step for maintaining healthier-looking, more resilient hair.

How does this leave-in treatment repair damaged hair?

The formula focuses on rebuilding and reinforcing weakened internal bonds rather than only coating the surface. Citric acid helps rebalance hair pH and supports the Bonding Care Complex to strengthen strands and minimize breakage over repeated use. Results include visibly fewer split ends and smoother texture from root to tip when used with complementary products.

• Citric acid targets compromised internal bonds.
• Bonding Care Complex helps reinforce strand structure.
• Regular use reduces visible split ends and breakage.
• Works on chemically treated and heat-damaged hair.

Will it protect my color and guard against heat styling?

Yes. The leave-in conditioner contains ingredients selected to help lock in color and provide thermal resistance during styling. It forms a protective layer that reduces color fade and helps defend against temperatures from blow dryers and hot tools, supporting longer-lasting salon color and smoother styling results.

• Color fade protection to maintain vibrancy between salon visits.
• Heat protection rated up to 450°F for hot tools.
• Lightweight finish that won’t weigh hair down or leave residue.

How do I use this product for best results?

For optimal performance, use the leave-in on clean, towel-dried hair and target the mid-lengths and ends where damage concentrates. Leave it in—do not rinse—and proceed with your usual styling routine. Pairing with the Acidic Bonding Concentrate Shampoo and Conditioner enhances cumulative repair and protection effects.

• Apply to damp, clean hair focusing on mid-lengths and ends.
• Leave in; style or blow-dry as desired.
• Can be used daily or as needed for ongoing protection.
• Combine with other Acidic Bonding Concentrate products for best results.

What hair types and situations is this best for?

This leave-in is formulated for a wide range of hair textures that are weakened by chemical services, heat styling, or environmental exposure. It’s vegan and sulfate-free, making it suitable for color-treated hair and those seeking a professional-strength, everyday repair step without harsh sulfates.

• Ideal for chemically processed, color-treated, or heat-stressed hair.
• Suitable for all textures: straight, wavy, curly, and coily.
• Good choice for anyone wanting daily thermal and color protection.

Who is this for: Redken Acidic Bonding Concentrate Leave-In Conditioner is for people who want a professional, science-backed treatment to strengthen and smooth weakened hair while protecting color and heat-styled lengths. If you regularly color, bleach, or use hot tools and want a lightweight daily treatment to reduce breakage and visible split ends, this product fits into a routine aimed at restoring resilience and preserving salon results.

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