Viviscal Extra Strength hair vitamin supplements provide nourishment for your hair for faster hair growth. Viviscal hair vitamin is a combination of vitamin C, silica compounds, and a highly concentrated marine protein, the brainchild of Dr. Allan Lassus of the University of Helsinki . It is well known that basic amino acids, fats and vitamins are essential for the growth of healthy hair. Undernourishment slows the growth rate of hair, and eventually leads to the hair thinning and then actually falling out. To put it simply, Viviscal is designed to replace and re-energize those nutrients.