Microneedling advice and suggestions?

I'm still trying to figure out a good skincare routine and want to try microneedling mainly to treat some hyperpigmentation and and dark spots, I haven't tried any other treatments yet but want to know what to look for in a provider and what the aftercare is really like since I've heard your skin can be red and irritated for a few days after, so I'm trying to plan around my schedule to make sure it doesn't interfere with work or other stuff I have going on I use sunscreen daily and have been using a serum with kojic acid and niacinamide, so I'm wondering if I need to pause those before or after treatment? Also if you've done microneedling please share what helped with recovery, how long before you actually saw results and how many sessions? Also open to place recommendations, I live in Denver but any CO suggestions are welcome