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What Is It: Viviscal Thickening Shampoo 250ml strengthens and reduces breakage, promoting naturally fuller, thicker, healthier‑looking hair. It is formulated with hair‑building blocks Biotin and Keratin and fortified with Marine Collagen and Seaweed extract. Key Benefits: Strengthens hair and reduces breakage, helping hair appear fuller, thicker and healthier‑looking. Formulated with Biotin and Keratin to support hair structure and improve resistance to damage. Fortified with Marine Collagen and Seaweed extract to support the appearance of thicker, more resilient hair. How To Use: Apply this shampoo to thoroughly wet hair and massage from scalp to ends before rinsing; repeat if necessary. For best results, follow with Viviscal Strengthening Conditioner; suitable for every wash. Key Ingredients: Contains hair‑building actives Biotin and Keratin to support strength and resilience, and is fortified with Marine Collagen and Seaweed extract to help reduce breakage and promote fuller, thicker, healthier‑looking hair. Verified details include volume of 250ml.