Abstract
Hair loss has a multifactorial etiology that includes internal and external triggers. These include poor diet and nutrition (extrinsic), as well as the natural aging process (intrinsic). Other external factors include pollution, hair products, hair styling, and ultraviolet exposure, which can cause free radical formation, oxidative stress, and microinflammation at the site of the hair follicles. Botanic substances have demonstrated antioxidant, anti-inflammatory, and immune-enhancing properties. Vitamins and minerals are needed when deficiencies are apparent or demonstrate efficacy at higher doses than normally found in one's diet. The safety and efficacy of oral nutraceuticals have been demonstrated in clinical trials.
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