Surely there's an existing thread on this that you could have bumped.
Anyway. I've challenged Noah once or twice on here for perpetuating the myth (presumably based on this New Times Hair video or a similar source, rather than personal experience), that injected skin pieces are "disposable".
IME "flat" or "normal" injected hair DOES NOT SHED, ever. I've had several, one of which lasted me almost 3 years(!!!), though the hair was buzzed down to a fraction of an inch (so the dryness or deterioration of the hair texture wasn't really visible). Hair will eventually break when styled or teased, but does not come loose and fall out from the 'root' like v-looped hair.
I'm currently wearing my first "lift injected" piece, and yes, it does shed *a little bit* faster than v-looped skin. But nothing ridiculous. It's about 6 weeks old and there's no visible difference to when it was new.
The advantage of injected ventilation is that it mimics the architecture of hair growing from the scalp much more closely than knotting or looping, so it allows for styles that incorprate and expose the growth pattern of the hair, rather than attempt to conceal it. The tradeoff is that the front edge can't be made invisible due to the thickness of the base. so unless you have a hybrid system with lace or v loop at the front, you need to have some kind of 'fringe' or 'bangs', even if it's just a couple of millimeters.
Pre-pandemic, the realism of the scalp appearance on the pieces i was getting put lace and v-looped skin utterly to shame, however, I've used both for brushed back styles with fully exposed hairlines where the crown swirl was hidden.
At this point, the injected pieces I'm getting look a little "pluggy", since they're being manufactured in a hurry by less experienced ventilators, and there are too many hairs per injection. The issues with quality and availability are the same as other types.
