Alcantara Headliner

New to me car with Alcantar headliner. I’m gonna give the car a full deep clean. I’ve got an extractor for the carpets, but I’ve never cleaned Alcantara headliner before. It’s my understanding that I need to just be gentle and use Sonax. I’ve always worked in small areas on Alcantara like a steering wheel, though so how do I approach a headliner without any seams or natural breaks. Or am I overthinking it?