As you can see from the picture (photo credit: New England Journal of Medicine), the man’s left-side face is significantly more aged than his right-side.

Note that during his treks cross country hauling cargo, this man’s left-side face was exposed significantly more to sunshine while driving.  Photos like this make it very convincing that the left-side accelerated skin damage was a result of excessive UV sunray exposure as the trucker said he never used face sunscreen and his windows were not tinted.

So proof is in the picture.  Sun exposure does contribute to premature aging.  Now if dermatologists are doing a long-term study on truckers who wear broad spectrum face sunscreen and comparing them with truckers who don’t, that would be an ideal study to publish in medical journals.

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