I've always had pretty nice, low-maintenance skin but now that I'm in my forties I find it needs extra attention. One thing I'd really like to improve is getting the glassy look. It seems like most women who achieve this are pretty young and/or on tret. I don't want to try tret because I'm very pale and already sun-sensitive. (At this point I've lost count of how many atypical things my dermatologist has lopped off, despite religiously using mineral sunscreen!)

My current skincare routine is here. It's definitely made a difference for me but I'm looking to refine it.

What can I tweak to get glass skin? Or is it even possible at my age without tret?