As Hersute pointed-out, that kind of work can involve changes in hairstyles... you can confide in those stylists with confidence...after all, a lot of that kind of image if not actually `photo-shopped` at the end, certainly is very `cosmetic`in nature.....you see these images of people and literally it`s a case of `not a hair out of place`.
I have noticed all right that despite people saying the camera never lies, when it comes to systems, even guys who post pics here have remarked many times that `` it looks better in reality`---don`t know what it is, but digital cameras seem to really `distort` system- hair images. I think , as you wear long-ish hair, it will be far less noticeable, especially if you have a few to hand ...you can replace it easily if it begins to look `tired` early ----if I was considering going into that game, I`d really have 3 or 4 systems at the ready---no way would I `nurse` one along and hope to get away with it in a studio-setting under intense light etc...you`d need to have `good`hair on your head at every session.
Most guys who use all -tape bonds, if they need to do a touch-up, usually do so with a little glue, but it can be quite `fiddly`....you`d need to keep the lace away from the glue until it`s almost `cured`..... some tapes may not even `take`to the glue...depends on a few things.... I reckon a glued front hairline is easier to touch-up with glue...... you are getting a poly strip....that`s very easy to work with.... I always found tape was really easy to apply to poly..it didn`t `lift`when I was peeling off the backing -papers....it frequently lifted from lace though and I`m not the most patient when it happens ! Even guys who use tapes at the front and contours, will often set them `back` a few millimeters from the very edge, and use glue to tack down that last little bit...you`ll find what works best for you after a while --it`s a case of experimenting really as it varies from one person to another as to what materials to use for bonds. Regards for now.