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The Redken Acidic Grow Full System Densifying Shampoo is formulated to add visible volume and density to fine hair types. Enriched with azelaic acid and a 7% Densifying Care Complex, the pH-balanced shampoo gently cleanses, while helping hair appear fuller-looking and softer. The lightweight texture lifts strands without weighing them down, leaving hair with a boost of natural volume. Designed to work with the scalp, the formula hydrates, while reducing the look of breakage.