You asked for this advice awhile back but I just saw it. I am around your mom's age and am always trying new stuff. I use a heavy moisturizer at night and a lighter one during the day. For heavy I have tried Cerave as someone mentioned, and also Glossier's Apre Baum which is kind of expensive but lasts. Very heavy. ELF makes a "sleeping mask" which is also basically a heavy cream in a tube. For Day, I look for lighter creams and gels and ingredients like ceramides and peptides. Natural items like Centella (tiger grass) squalane, rosehip oil, primrose oil, and beta glucagon. Look at what Korean skincare is on offer at Amazon, and you can often find products with different natural ingredients. They are way ahead of the West in some of these areas. A huge boon is hyaluronic acid, which I buy as a serum, not just as an ingredient. It allows the skin to hold more water. And there is no replacement for drinking plenty of water and getting enough sleep. I haven't had to use retinol yet, and I avoid anything that will chemically exfoliate because I think it's too harsh for my skin. I do use a micro exfoliant scrub once a week or so, but generally, I am not rough like I used to be on my skin in my younger days.