• Protects damaged capillary links at the molecular level, leaving hair visibly healthier and repaired. • Concentrated formula with a higher concentration of ingredients, enriched with biotin and 3 times more Pro-V. • Developed by experts with 75 years of scientific research in Pro-V, certified by the Swiss Vitamin Institute. • Recommended for use in combination with other products from the Molecular Bond Repair line: conditioner, mask, and intensive treatment. • 1-liter bottle with dispenser, convenient and sustainable, for longer-lasting use.