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REDKEN Acidic pH Sealer is a concentrated acidic treatment for damaged and chemically treated hair. Its pH level of 3.0–4.0 helps balance the hair’s natural pH, seals the cuticle, and reduces visible damage after just one treatment, leaving hair smoother, more even, and shinier. Citric acid, taurine, arginine, and hydrolyzed plant proteins and soy proteins strengthen the weakened structure and make hair soft and easy to manage. Used as the final step of a salon treatment after the Acidic Moisture Concentrate and/or Acidic Protein Amino Concentrate
