The best sunscreen for anti aging purposes is probably the that is SPF 30 or above and helpful on not just the UVB rays, but the UVA light.
For this reason you must use smart skincare products to fight it. I have the advantage of good skin but not everyone is so lucky. https://Medium.com/@healthbeautyproducts_66692/how-cbd-can-help-you-achieve-perfect-skin-3ea95a702ea1