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Haircare

Acidic Strength Concentrates: The Stylist's Guide to Personalized Hair Repair

Redken Updated On 05/01/2026
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Stylist Technical Overview:

Redken’s Acidic Strength Concentrates provide a high-performance, backbar-exclusive solution to address the three pillars of hair health: Protein, Moisture, and pH balance. This 3-step liquid system allows for total customization, enabling you to prescribe a precise dose of strength or hydration based on your technical diagnosis.



The Professional Toolkit:

  1. Acidic Protein Amino Concentrate: 12% Cationic + Amino Acid complex to rebuild the internal structure of sensitized hair.
  2. Acidic Moisture Concentrate: 10% Glycerin to replenish the lipid layer and restore suppleness.
  3. Acidic pH Sealer: An essential pH 3.0-4.0 closer that constricts the cuticle and locks in the concentrate treatment.


Pro Performance Data:

  • Visibly reverses one year of surface damage in a single service.
  • Reduces breakage and repairs strength for up to 10 washes.
  • Optimized backbar-friendly 250ml format with high-efficiency pump.


Identify the Hair Deficiency:

  • Protein Deficient: Hair feels mushy when wet, lacks elasticity, or has been over-processed by high-lift blonding or chemical texture services.
    Prescription: Higher concentration of Protein Amino Concentrate.
  • Moisture Deficient: Hair is dull, brittle, tangled, or has excessive frizz due to mechanical or environmental stress.
    Prescription: Higher concentration of Moisture Concentrate.


Customize Your Formula (Total Mixture = 15ml Max):

  • Synergistic Blend (1:1): 1 dose (5ml) Protein + 1 dose (5ml) Moisture. For standard maintenance and preventative care.
  • Reconstructive Blend (2:1): 2 doses (10ml) Protein + 1 dose (5ml) Moisture. For high-porosity, chemically compromised hair.
  • Hydrating Blend (1:2): 1 dose (5ml) Protein + 2 doses (10ml) Moisture. For extremely dry, coarse, or frizzy textures.


Protocol Rule:

Step 3 (Acidic pH Sealer) is non-negotiable. It is the chemical "seal" that secures the treatment within the fiber.

Backbar Workflow:

  1. Prep: Cleanse with Acidic Bonding Concentrate Shampoo.
  2. Apply: On towel-dried hair, apply your custom Acidic Strength Concentrate blend from mid-lengths to ends.
  3. Process: Leave for 5 minutes. Do not rinse.
  4. Seal: Spray 10-15 pumps of Acidic pH Sealer over the concentrates. Work through hair for 1 minute.
  5. Finish: Rinse thoroughly and proceed with the desired Redken styling regimen.

Upgraded Backbar Sustainability:

  • High-efficiency pump for precise 5ml dosing.
  • 100% PCR plastic bottles.
  • 48% less plastic waste vs. previous syringe system.