I agree NG if you dont have hairloss dont wear, Some do like just to wear for performing on stage,etc
So answers are :
1.) Is the PSB ThinSkin hot to wear? Is it ventilated?
It can get hot, But most say it is ok, For ventilation it can be knotted or injected in the base.
2.) Does it require adhesive or does it vacuum to the head?
You will need to attach it, Preferably with glue
3.) Can the hair be pushed back in front or are bangs mandatory?
You can get it to go back as long as it is ventilated/injected at the correct angle.
4.) How undetectable is it? I know the hairs are injected into the base rather than knotted. I assume it's not as realistic as lace but what does it look like close-up?
See photos of one of my PSB pieces below, I included one of a flatback injected hairline
not as good as lace it will give an idea.
5.) Is the base translucent, flesh-colored, or what exactly?
It gives a white scalp look.
6.) What else do I need to know ??
Some HR company,s are charging nearly $500 and over for a normal size topper, STAY AWAY from them they are thieving lying rogues FACT !