Like I said above, I went with some high end clip in extensions that were real hair (the other ones are icky, like ones you buy at the drugstore, no). I got mine at a professional wig and hair extension salon and I didn't think I would liek them but I loved them! They matched my hair color and texture perfectly and look so natural that when I have them in, I can't tell sometimes if I'm touching my own hair or the extensions. For about $200 I got 4 large peices (that go in rows around the head) and 4 small peices that are used in the front areas. I usually only wear 2 large peices when I wear them cause my hair's already thick and all of it together makes me have a ton of hair. But I've been so satisfied. ?They're still in great shape and I've had them a little over 2 yrs now.
To put them in, you pull your hair up in a clip, and comb some down creating a straight part all around the head. then you clip the extension in along the part with the 3 clips on it. they are flat metal clips/combs that lock the extension in place. the clips/combs are covered by the hair so it blends right in. These work well if you have layered hair. They hurt a little when I first put them in just because I wasn't used to them but the good news is you can wear them comfortably for a day or two, take them out at night when you're sleeping. Wear them when you want longer hair and skip em when you want to rock your shorter hair. I'm a big fan. Plus they look great! No one would be able to tell I had extensions in. BUT you can see the bumps if you pull your hair up so they're really best for down or half-up hair. Hope this helps! I can't remeber what brand mine are but I think they're made by Farrah Faucett or something? I dunno. I've definately gotten my $200 worth out of them!