Why's that? If you think about it logically and from the point of view of bonding, it should technically make NO difference either way. Or as Curtis puts in, 'the tape doesn't care'.
In my personal experience I get better precision and a better bond by putting the tape onto my scalp first. It didn't help that the stylist I went to resized the base of my first system too big, so it was very difficult to get the tape in the right place by putting it onto my system first. I found it much easier to put it on the scalp first. Ultimately I think it just comes down to personal preference.
I love Curtis, but he even puts the tape on upside down. Don't get me wrong.
.. The adhesive is the same on both sides, but The ultra hold Tabs are meant to go white side up.... You remove the blue backing attach that to the base.
Applying the tape to your scalp instead of the unit creates a few problems:
You cannot precisely attach the tape right up to the edges.
If the system is turned and is not perfectly straight and parallel, you won't know until it's too late.... you'll either have to have live with it, or risk damaging the system pulling it off to reposition.
This could present additional problems.
You can damage or stretch the unit removing it as its a new and strong bond
It would reduce the adhesion/longevity if you Re-stick the same tape You just pulled. Off of your scalp.
You may possibly have to remove and install new tape all over again.
Lots of people do things unconventionally, but the reason there is "conventional" is because its tried and true......
I mean, this nicely and I am always here to help anyone. But I have never seen more of an abundance of MacGyver's than I have on this website. Everybody wants to do things differently than the manufacturers and professionals recommend. They want to use sketchy Sources for products.... use products for time frames outside of manufacturer's recommendation. Use non hair system toxic car chemicals to clean these delicate systems and expose their highly vascular Scalps to it... It's common knowledge that these are highly processed dyed hair. So it is best to use a gentle quality shampoo that is sulfate free. So we interpret that as let's use harsh dish soap, that's meant to remove burnt cheese from baking pans.....And just basically go against absolutely everything that has been learned over the last 30-plus years by people in the business and people wearing hair.