Before you ask, no I am not pregnant. I have been taking prenatal vitamins for almost a year now for my hair, skin, and nails. I know there are some vitamins and supplements out there that are designed to improve the health of your skin, hair, and nails but they were less effective these prenatal vitamins. Some prenatal vitamins are very expensive. I have even seen some for $50! I buy Walgreens' brand of prenatal vitamins because they have the same ingredients in them as the other fancy brands that cost 5 times as much. That's right, Walgreens' brand is only $9.99! The bottle contains 100 tablets and you take one a day. There are no preservatives added and it is sodium free. The vitamin didn't do much for my hair, however my nails are growing at an unstoppable rate and they are thick and strong. I have to constantly clip them so I don't scratch myself with them. They look so long and healthy and have a great natural shine to them. This prenatal vitamin has also added a nice healthy glow to my skin. Everyone asks me how I keep my nails so long without ever painting them, I tell them my secret. Prenatal vitamins are awesome! Don't get talked into buying the expensive ones either, go for the store brand the ingredients are the same.