Looking for the best biotin supplement to add to your daily beauty routine? Our stand-alone biotin vitamin is the perfect solution. Biotin is a water-soluble B vitamin that supports the formation of keratin, which is a building block for hair, scalp, skin and nails. Biotin also supports energy metabolism. At Country Life, just one serving of our High-Potency Biotin 10 mg provides you with 33,333% of your recommended daily value. This biotin supplement is also certified vegan and gluten-free to suit your dietary needs. Shop our complete collection of biotin vitamins, from ingestible sprays to high-potency biotin in 5,000 mcg (5 mg).