Re: Sunscreen!
No they don’t but if you actually understand how sunscreen’s work, then the below quote makes sense. I use a physical sunscreen. The first thing that I put on my face is Vit. C serum. Then 10-15 minutes later I apply sunscreen. With physical sunscreen’s, there is no need for them to absorb onto the skin. I want/need the serum to abroab onto my skin for maximum result. If I wore a moisturizer, I would also apply that UNDER the sunscreen. If I’m wearing make-up, all that goes after sunscreen.
“Yet other sources suggest that it depends whether the sunscreen is a chemical formulation, which reduces ultraviolet radiation penetration, or a physical blocker, which uses titanium dioxide or zinc oxide to deflect harmful rays. They generally recommend applying chemical sunscreens first to maximize absorption; physical sunblocks, meanwhile, can go under or over moisturizer.”