Wigs and hair pieces come in different forms and are applied to hair topically. Long, full wigs are made to cover your entire head (fun fact: wigs used to be called “head coverings” for this reason). This also includes wigs that are called “lace fronts” or “netting”—these are just methods for how the wigs are made. Wigs act as a replacement for your own hair and are meant to cover your entire head. Wigs can be used for many reasons such as hair loss, balding, or simply to change your look.
Hair pieces are a little different and often come in the shape of a bun, ponytail, or hair tie so you can just place it on top of your own hair. Hair pieces can be used if a specific area of your head is thinning and you need to place hair on top of this section, or they can simply be used to create a different hairstyle, such as a super long, full ponytail with just one piece to add thickness.
Typically, real human full wigs can last for up to one year if you take good care of them.