NO AD is a brand of sunscreen that can be purchase through the hub that I wrote.
All sunscreens slow the aging process because they protect from the sun, and some have vitamin E and other things in them to minimise free radicals that cause aging and moisturising helps keep the skin nourished and moist so that it doesn't dry up.
It can be a bit from both - it just depends on the brand and what is actually in the sunscreen - also other factors such as diet, excercise and environment need to be considered.
Thanks for the question! I hope I answered the question well.