Vinegar not only adds flavor to your food without many calories, but it's also rich in antioxidants. However, vinegar is not a rich source of nutrients that promote hair health and can't help you grow new hair. Consult your doctor if you're concerned about how your diet might affect your hair.
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Hair, Nutrition and Vinegar
A diet that's deficient in protein, essential fats, iron or zinc may affect hair health and lead to hair loss, according to a study published in 2015 in Dermatology Research and Practice. Because vinegar is a poor source of these nutrients, adding it to your diet may not do much good when it comes to hair loss.
Vinegar may not help improve hair health when it's part of your diet, but articles published in the Huffington Post and Natural News in 2012 suggest applying it directly to your hair may improve shine and softness. A mixture of apple cider vinegar and water helps remove hair product buildup and may help untangle knots.