I've been treating my scars for the past year or so with subcision and microneedling. I started using retin a .025 a few weeks ago. I got a derminator and would like to use it soon. Should I stop using retin a for a week before the microneedling? Also do i need to stop using it before my next subcision in October? And when can I start using it again after each of these treatments? Thanks in advance for any info.