Nutritional supplements that enhance the natural beauty of the skin, nails, and hair are known as nutricosmeceuticals. They work from the inside out to encourage inner attractiveness. It is the newest development in the beauty sector. Due to its health benefits and healthy results the market size of nutricosmeceuticals is expanding especially in European countries, China and now around the globe. Today's consumers are extremely cautious about the foods they take into their bodies especially post-COVID, there is also a growing market for natural goods that can improve one's health and appearance without having any negative side effects. However, because of their long history of use many nutricosmetic products are regarded as effective. In this review, we have discussed about the etiology of hair weakening as there are many causes of hair weakening like poor nutrition, environment etc. Different causes of hair thinning their mechanism, existing therapies, characterisation of hair fibres and herbal drugs used in treatment of hairs are discussed.