Biotin, also known as vitamin B7 or vitamin H, is a water-soluble B-complex vitamin that plays a crucial role in the metabolism of carbohydrates, fats, and proteins. In the context of skincare, biotin is recognized for its ability to support healthy skin by improving hydration, smoothness, and overall appearance. It contributes to the maintenance of skin integrity and may assist in alleviating conditions such as dryness and flakiness. Topical application of biotin has been explored for its potential benefits in enhancing skin health, although more research is needed to fully understand its efficacy in this area.

In hair care, biotin is often incorporated into products aimed at strengthening hair and promoting growth. It is believed to improve hair’s keratin infrastructure, which can lead to increased hair strength and resilience. While biotin deficiency is rare, supplementation or topical application in individuals with low biotin levels has been associated with improvements in hair health. However, evidence supporting its effectiveness in individuals without a deficiency is limited. Nonetheless, biotin remains a popular ingredient in shampoos, conditioners, and hair masks targeting hair thinning and breakage.