Some treatments for improving brittle nails are to use vitamin supplements and biotin, proper moisturizing and fortified nail polishes. Some natural approaches to improving brittle nails are to avoid harsh nail products, nail hardeners and over-clipping the nail cuticles, according to HowStuffWorks.
A diet that lacks a sufficient amount of iron and zinc often results in poor nail health. Taking a multivitamin that contains essential vitamins and minerals such as niacin, iron, calcium, and vitamins A and C is one helpful method for improving nail health, says to HowStuffWorks. A source of vitamin B that also contains biotin is also reported as being helpful for improving nail health. Natural sources of biotin include bananas, oatmeal, mushrooms, soy and peanuts. However, there is no available information as to how effective this treatment is for humans or how it works, as of 2016.
A lack of moisture is a common cause of brittle nails. Vaseline and other store-bought moisturizers contribute to healthy nails, states HowStuffWorks. Some moisturizing products are specifically formulated to improve nail health and they contain ingredients such as vitamin E, avocado oil and shea butter. There are also home moisture remedies such as a solution of egg yolks and milk.
Fortified nail polishes contain extra vitamins and minerals that are meant to improve nail health. It is also important to avoid nail polish removers that contain harsh chemicals as they cause damage to the nails, claims HowStuffWorks.