By now, you have an idea of how difficult treating yellow nails can be. One treatment that may offer some hope involves using vitamin E. Results have been mixed so far, with one study finding that a topical vitamin E solution proved no more effective in treating yellow nail syndrome than a placebo [source: Lambert et al.]. Another study, however, found that taking vitamin E orally in combination with medications for yellow nail syndrome or fungal infections can produce some very positive results, sometimes clearing the nails up within a 10-month period [source: Robert and Luc]. Interestingly enough, while topical application of vitamin E solution had little effect treating discoloration, it did promote general nail health.
Like zinc, vitamin E provides additional health benefits, encouraging healthy skin and eyes, making vitamin E an important part of your diet regardless of its effectiveness in treating yellow nails.
Vitamin E and zinc are important to nail health but don't overlook other vitamins and minerals to help keep nails (and hair) healthy and strong.