In the link to Dr. Fernandes you posted in the other
thread, Dr. Fernandes disagrees with Dr. McCaffery because he says that the minimum interval for 1 mm rollers is one week. This implies that the minimum interval for 0.75 mm needles must be at least more than a couple of days.
So Dr. Des Fernandes and Dr. Phillipa McCaffery are in disagreement.
It gets even more interesting: The patent holder of the Original Dermaroller™ disagrees with both Dr. Fernandes and Dr. McCaffery, because the patent holders advise very much longer treatment intervals.
The Original Dermaroller™ patent holders say that a 0.2 mm roller can only be used two to three times a week. So they would strongly advise against Dr. McCaffery's practice.
We were aware of all this conflicting advice, and based on that conflicting advice and what we learned from the most recent published studies, we came to advise what we do at the moment.
And not even comparing their "before and after" pictures will help - they all have those and they all look impressive..
I want to add that it is not in our financial interest to advise a long pause between rolling sessions - we would sell several
times more rollers (they would blunt faster) if people would roll with much shorter intervals. So our advice is based on literature research - not commercial motives.