What role does biotin play in hair care?

Biotin, also known as vitamin B7, plays a significant role in maintaining healthy hair by supporting its thickening. It is a crucial component of keratin, the protein that makes up the majority of hair's structure. When the body has adequate levels of biotin, it can enhance the production of keratin, leading to stronger and thicker hair strands.

Biotin deficiency may lead to thinning hair or hair loss, which is why it is often included in many hair care products and supplements. While some other options touch on aspects of hair health, they do not directly reflect biotin's primary function. For instance, biotin isn't specifically associated with preventing hair loss in all cases or promoting dye retention or shine directly. Instead, its role in enhancing hair thickness directly connects it to the overall health and appearance of hair, making it a crucial nutrient for those looking to support their hair care regimen effectively.