Mivolis Biotin 5 mg N helps prevent biotin deficiency. Biotin is essential for the body and particularly important for the formation of keratin, a structural protein necessary for hair, skin, and fingernails. A biotin deficiency can manifest as brittle fingernails, dull hair, and flaky skin. Regular intake of Mivolis Biotin 5 mg N provides the body with a sufficient amount of biotin and can thus prevent a biotin deficiency.