Be careful on any videos and their viewpoint. I would think there is a bias for click on videos to be positive of it. Just the nature of things.
My understanding, is as it needs to click on to native hair it can stress/pull those hairs (out).
If for a short term wear (eg a couple of days) or try...
The style is a good one as it obscures the front hairline which is the trickest part to get right.
If you have never used a system before then I strongly recommend you get some practice before you go on holiday. This will develop a better understanding of how to deal with a system, which in...
Compared to 12 years ago, I reduced my density and added 10% grey. I took the state of my native hair in terms of colour and density as a guide for my piece.
I use walker supertape and get 3-weeks over several washes. I know there are different strengths from daily to weeks. Maybe also chane your tape supplier and see if there is any difference. Ultimately, it could be a body chemistry and activity thing
A few washes to start then leave it in the quite strong sun for 15 minute periods until it gets to the colour you want would be what I do. Monitor it in the sun as the power of it can speed it up
Ive used Schwarzkopf products for a decade. Usually have the piece off when I dye, but do the piece and my natural hair at the same time.
Never had a problem