Viviscal Extra Strngth Hair Grth Supplements 60 TbsViviscal Extra Strngth Hair Grth strngthens and enhances the appearance of fine, thinning hair. nourishes to keep it healthy as unhealthy factors including overstyling, poor nutrition and stress can cause damage to hair from the inside out, fortifies hair follicles and boosts blood circulation in your scalp. Everyday stress, poor nutrition, and damage caused by the environment and overstyling can impact the health of your hair and lead to breakage and