I just started taking biotin supplements last Saturday and so far so good. Biotin is known to strengthen and promote growth of hair and nails, and to add elasticity to skin. Some people have given testimonials that biotin supplements give their skin a glow. The brand I am taking is Country Life and the dosage is 1000 mcg at one pill a day with a meal. Usually biotin supplements can be quite pricey so I was more than happy to order two bottles from Swanson Vitamins at the amazing price of $3.27 USD for a bottle of 100 pills and even better their formula is vegan and free of yeast, corn, wheat, soy, gluten, milk, salt, sugar, starch, preservatives and artificial colour, which is great because the more basic the ingredients in supplements are than the more easier it is for your body to digest it for your body to use the nutrients effectively.