Growing out your hair is a very tedious process that can take a very long time to do properly. If you want quick lengths (such as for a special occasion or event), hair extensions are better than actually going through the frustrating process of growing out your hair. Then, if you need a rapid color shift or added texture which you can easily take away when you are ready to go back to your day to day natural look, hair extensions can also be helpful. What are they really though? Well, hair extensions are pieces of hair (either synthetic or real) which are added to your natural hair. True human hair is best for extended length and added volume. Meanwhile, synthetic hair extensions are best for color shifts, dreadlocks, and braids. Despite the fact that there are only two varieties of hair extensions, there are many different ways to apply these hair pieces which each yield a different end result.
Thermal application is the most common process for implementing hair extensions. It uses a type of polymer matter to thermally attach a section of roughly 20-30 strands of hair to your own real hair. The strands of hair extensions are put in select sections around your head, and they are normally not damaging to your natural hair. The only real downfall of the thermal application of hair extensions is that the polymer glue can be easily seen when you pull your hair back. It can also be quite expensive. Make sure to shop around if you choose a thermal application.
Track extensions (also known as weft extensions) on the other hand are not as common as thermal ones, but they should not be counted out of your possible options. To apply track or weft extensions, your natural hair is styled into a firm and strong braid across your head. Then, the extensions are actually sewn into the braid to act as a literal curtain of hair. It is practically damage free to your real hair. Yet, this method is not suitable for all types of hair.
Clip-on extensions are very similar to track extensions since they form a curtain of hair. They are applied only semi-permanently though since they are attached with clips rather than being sewn into the hair. You can reuse clip-ons as often as you want, but you need to make sure to take very good care of your clip-on hair pieces. Since they are constantly being pulled out and placed aside, the hair itself can start to look a little rough if not treated gentle and with great care.