Sunscreen is hard to get right. But rem it is the only proven anti-age (preventing) stuff. There aren't many sunscreens that last very many hours. But they are getting better. And a lot now advise to supplement with vitamin D if you're a faithful sunscreen user.
mrsmartin I'm still not convinced it's the magic of decleor that has changed your skin! There are so many variables in the appearance of skin, diet, hormones, age. I'm still envious tho!
Experts do differ, but then they have huge world wide ethical trials to decipher, discuss and debate. And it is incedibly difficult to prove cause and effect, which is why it took so long to prove cigarettes caused cancer, COPD, etc. and why there are differing opinions on stuff. I don't think it's a fair comparison, medical theories with worldwide trials and open discussion, and the magical cosmetic world.
The cosmetic industry makes fabulous sounding fuzzy claims with no proof at all. I don't know of any decent trial on cosmetics.
I'm with muslinsuit, choose for comfort, not for sort-of promised sort-of miracles. And wear sunscreen.