When you start looking into getting hair extensions, you may run into salons that offer weaves.
A weave is when all of your natural hair is braided. Then the stylists will take a hook and needle and sew in the hair extensions into the braid.
The service can be a little pricey--around $500 or more--depending on the quality of extensions that you get.
There are disadvantages to getting a weave. Typically a weave will last anywhere from 6-10 weeks, usually a little bit less than other types of extensions. Also, if you don't go with an experienced hair stylist, your braids could be done to tight on your head. Overly tight braids can contribute to scalp soreness, itchiness and even permanent hair loss. The stress of the hair pulling too much on the scalp can cause the natural hair to fall out at the roots.
If you have ever worn your hair in braids, it can take some getting used to. I know that I experience itchiness even when the braids are not too tight.
But the weave is viable option for getting long hair and one big advantage is that it does not use any sort of chemical or adhesive--which in the end will be better for your hair.