In the latest post on Real Simple, Gina gives her advice on how to help keep your hair from prematurely going grey. She adds that in addition to ingestion, topical application of these ingredients are also beneficial. “Using products rich in biotin, collagen, and B vitamins are terrific for ensuring that you have a healthy scalp,” she says. “Its restoration properties that can contribute to maintaining hair health that is needed to maintain your natural hair color longer. ” She adds that iron, in particular, can help boost the production of melanin in your hair.