Review (3/5): Shiny finish, not invisible.Glare under lights is visible with fine hair.
They work well, a much needed thing for fine hair and tape in extensions. The key is to use the tape in extension that has tape already, and rather than sandwiching too tape in extensions together (too heavy for fine hair) you use the single sided tape for the other side. I watched many videos on how to do this and I did it myself and they feel fine. There aren't very many pieces in this package for the price, however. It's a bit expensive for only 48 pieces. I nearly used all of them for one application.
Update: After a full month of having the extensions in. Over-all a good experience but will not order these tapes again.
I am changing my rating in follow up. Impossible to remove without damaging hair. The glue warmed and leaked out the sides over time and caught my hair in the leaked glue. This shortened the length of time I could wear the extensions. I tried to use this one sided tape and it is very shiny, you can see the glimmer of the tape. Not shine free. I would not use this on fine hair.