Redken Extreme CAT Treatment protein reconstructing rinse for distressed, brittle hair — 6.8 fl oz, strengthens & detangles

Redken Extreme CAT Treatment is a rinse-out, protein-rich reconstructing formula designed to strengthen and recondition distressed, brittle hair without weighing it down.

Built on Redken’s salon-grade science, this 6.8 fl oz treatment targets weakened strands to improve resilience and manageability. The formula incorporates Redken’s Strength Complex to deliver proteins where hair needs them most, helping to fortify fibers after chemical services, heat styling, or everyday wear. It rinses out cleanly, leaving hair smoother and better prepared for styling.

How does this treatment rebuild fragile hair?

The Extreme CAT Treatment delivers concentrated proteins that bond with compromised areas of the strand to improve tensile strength. It does not simply coat hair; it works to replenish structural components so strands feel firmer and breakage is reduced during combing and styling.

• Strength Complex proteins target weak spots along the hair shaft
• Rinse-out format deposits treatment where it’s needed and removes excess
• Reconstructs fiber without leaving a heavy residue

When should I use this rinse-out treatment in my routine?

Use Extreme CAT after shampooing on towel-dried hair, leaving it on briefly before rinsing. It’s especially useful after chemical processes like coloring or bleaching, and can be used weekly or as needed to maintain strength between salon visits.

• Apply to clean, damp hair following shampoo
• Leave for the recommended time to allow proteins to penetrate
• Rinse thoroughly to avoid buildup and maintain lightness

Will this make my hair feel heavy or greasy?

No — the formula is designed to reconstruct without weighing hair down. You’ll notice improved texture and shine while the hair retains natural movement and body, making it easy to style afterward.

• Light rinse-out texture preserves volume
• Leaves hair smooth and touchable rather than coated
• Helps hair hold styles without feeling stiff

How does this treatment support color-treated or chemically processed hair?

The protein-rich composition helps reinforce strands that have been weakened by color, lightening, or relaxers, improving elasticity and reducing snap-off during styling. It’s a preparatory and maintenance step to help protect hair between professional services.

• Preps hair for future chemical services to minimize additional damage
• Restores feel and shine that processing can reduce
• Helps maintain hair integrity after salon treatments

Who is this for? Redken Extreme CAT Treatment is formulated for people with distressed, brittle, or chemically altered hair who want a salon-grade reconstructing step. It’s suitable for anyone seeking to strengthen fragile strands without sacrificing body or adding product weight — ideal for color-treated, heat-styled, or frequently processed hair that needs targeted rebuilding and improved manageability.

• Features: Rinse-out treatment for damaged hair, instantly adds strength to brittle hair, reconstructs without adding weight, repairs hair with protein, reconditions and adds shine.
• Size: 6.8 fl oz (200 ml) — a salon-sized bottle for multiple treatments.
• Brand: Redken — professional, science-backed haircare.

Ingredients

Aqua/Water/Eau, Hydroxypropyltrimonium Hydrolyzed Wheat Protein, Magnesium Sulfate, Laureth-23, Taurine, Sodium Benzoate, Parfum/Fragrance, Cocamidopropyl Betaine, Salicylic Acid, Polyquaternium-10, Arginine, Lysine Hydrochloride/Lysine Hcl, Phenoxyethanol, Linalool, Hexyl Cinnamal, Citronellol (D50156/2).