Jules I agree, hyalauronic acid plumps the skin but this scientist isn't into cosmetics, so I was surprised he was using it. So I looked into it and its actually a longevity compound (though they really need to know how to get us to ingest it to get the benefit, but still he must think there's some effect through a bit of skin absorption maybe).
Yes ageing gets us in the end, the thing that bothered me was a sudden noticing of changes overnight and then an improvement again on hrt. That seems to be something within our control.
Glad you reminded me of sunscreen, I don't really use it because I figured I need the vitamin D from the sun more than I need wrinkle free skin and I don't go out in it enough to get burned. I may rethink that though.