Biotin, or vitamin H is part of the complex B vitamins.
Along with helping the body metabolize fats and carbohydrates, biotin has been linked to improved hair health and maintaining proper function of the nervous system.
Biotin is a water-soluble vitamin, which means that your body cannot store it.
You can find biotin in fruits, nuts and vegetables so chances are if you have a proper diet, you do not have a biotin deficiency.
A biotin deficiency can lead to a variety of skin problems including rashes, acne, psoriasis, dermatitis and overall itchiness so I would recommend supplementing with biotin if you have any of these issues.
Take home message: Eat more biotin rich foods such as fruits, nuts and vegetables and supplement with biotin if deficient, for healthier skin and nails.