Viviscal Man Full Force Fortifying Shampoo is the ultimate hair thickening shampoo for men. Full Force Shampoo makes hair look fuller with our exclusive thickening ingredient Ana:Tel™ and strengthens strands with the anti-breakage ingredient Keravis™. Our proven formula nourishes the outside of hair with healthy hair ingredients including Biotin, Zinc and Keratin, while deep cleaning the hair and scalp to create the ideal environment for healthy hair growth.