You will find that the better class stores that carry wigs and hairpieces have a large section of wigs made from human hair.
The only fault when using human hair in your wig  is that the price could be espensive.
If money is tight and the cost for human hair is out of your budget,  get a high end synthetic piece, then when you have the money get one made with human hair.

When it comes time to choose your wig you want to make sure it matches your own hair as close as posible.
The color is not the only thing you have to match you also need to match the texture of your own hair.
If the hair on your head is fine than your wig or hairpiece needs to be made fine also, and if your hair is coarse, wavy or curly , your wig or hairpiece needs to be made the same.

Just remember when your searching for a wig or hairpiece you need to take your time and be patient.
By taking the the steps to insure your matching the color and tecture of your own hair, it will make finding the perfect hairpiece a much easier task.

The best hairpiece is made out of human hair.