I'm posting this to let you know a little bit about what I know.
I'm skilled in 4 types of extensions. So depending on your hair type, there are definate options.
*Extentube (Hair Locs)
~hair is secured using tiny copper or aluminum tubes.
*Plastic Tube
~hair is secured using heat to melt tiny plastic tubes onto the hair. (as much heat as a flatiron)
*Keratip (Greatlenths/Fusion)
~hair is secured using a heat/rolling method. the extension hair is made with a meltable glue tip.
*Skinweft
~hair comes in a panel, the top section is heated to melt the glue, and it is applied to the hair.
if anyone has anymore questions, feel free to ask. i'd love to help you out.
-ape