Guide To Common Supplements For The Hair, Skin, And Nails
Vitamin B12

Vitamin B12 deficiencies are associated with skin lesions and hyperpigmentation. Patients with low levels of this vitamin may notice premature graying of the hair and premature hair loss. If a vitamin B12 deficiency is present, patients may develop ridges in the fingernails. The lunula (the white half-moon at the cuticle) may be absent as well. Studies show that vitamin B12 supplements may help improve skin, nail, and hair health in individuals with low vitamin B12. In fact, case studies have shown that several different skin lesions completely disappear once the patient's vitamin B12 level reaches a healthy range.
Patients can have their vitamin B12 levels checked with a simple blood test. If the patient has a severe deficiency, vitamin B12 injections may be necessary. Doctors may prescribe high-dose oral supplements for several weeks. Although supplementation is critical for patients with low vitamin B12, research suggests that individuals who have vitamin B12 levels in the healthy range are unlikely to benefit from supplements.