I'm going to recommend Vagisil lube again - it's not intended to be absorbed, but it's not as "leaky" as KY and similar lubes, so it basically is designed to stay in place and keep things moist. It also doesn't rely on estrogen receptors or whatever in the vagina, because it's a purely physical product, no hormones. It works beautifully for me; not enough moisture that I need to wear a pad or worry about it, but just enough that I'm not occasionally uncomfortably dry day to day. I use it for dilations, which at this point is about every other day but was 3X a day back when I started with it.
(This is, of course, a recommendation for daily moisturizing rather than for sexual intercourse - although I'm sure it'd work fine for that too, I self-lubricate enough when aroused that I haven't tried.)