>For the sake of discussion, say someone wore an opaque mask or sunblock every time they went outside during their entire life, including childhood. I claim that, at age 60, such a person’s skin would likely appear to be 40—or less.<
In that scenario, I would think the youthful look would be a result of the person having no relationship-derived stress for 60 years.
There are parts of Scotland that don't get that much direct sun. The important this thing is the skin age appearence and the facial age appearence are not the same. And yes sun screen is good for you.
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