Biotin Shampoo

Biotin shampoo may help reduce hair thinning and support scalp health in people with subclinical biotin deficiency. Biotin can be absorbed transdermally through the skin, allowing biotin shampoos to deliver biotin to the scalp. Topical biotin application alone has limited long-term effect when the deficiency is systemic, as it does not address root causes like gut flora disruption or increased metabolic demand.