If you have thin hair or you simply want added volume, length or a colorful highlighted section, why not try hair extensions? For those who don't want to commit to the more permanent manner of adding extra tresses, consider the clip-in variety. The number of extensions you use is up to you and the look you want to achieve. The extensions, which vary in strip widths, are applied using small toupee clips that have been stitched on to them. Halo extensions ate a great option to add length, fullness and are 100% human hair. A few well placed tape-in extensions near the front hairline can also provide a youthful new look.