The Schwarzkopf BC Bonacure Repair Rescue collection is formulated with a combination of strengthening, conditioning, and protective ingredients to repair and revitalise damaged hair. Key components include hydrolysed keratin and arginine, which help rebuild and reinforce the hair’s inner structure, along with soy and wheat amino acids to improve elasticity and resilience. Panthenol (Pro‑Vitamin B5) and nourishing lipids provide moisture and shine, while cetearyl alcohol, behentrimonium chloride, and polyquaterniums smooth the hair surface, detangle, and enhance manageability. Mild surfactants gently cleanse without stripping natural oils, and silicones like dimethicone help seal the cuticle for extra smoothness and gloss. The formulas also contain citric acid or lactic acid to balance pH, tocopheryl acetate (Vitamin E) as an antioxidant, fragrances for a pleasant scent, and preservatives such as sodium benzoate and potassium sorbate to maintain stability. Together, these ingredients work to strengthen, nourish, and protect hair from breakage, leaving it healthier, softer, and more resilient.