Olive oil gives our hair gloss. If our hair is deficient of zinc and iron, olive oil will give it shine and fizz while nurturing it. If you have zinc or iron deficiency, and experience hair loss, applying olive oil on your hair might help stop the hair loss and cure the deficiencies. Olive oil has no side effects. It is not harmful. You can apply it on your scalp 2-3 times per week, set it for half an hour and then take a shower. If our hair gets very greasy, it is best to avoid using olive oil on your hair. It is more suitable for people who have dry and dull hair, and who experience hair loss because the olive oil mask gives he hair shine, gloss, and strength.