by LGK » Sep 18, 2010 OK so when I went to Costa Rica I had my trusty Neutrogena SPF 70 Dry Touch sunblock, thinking I was totally fine. I *have* learned to apply sunblock properly over the years- liberally! repeatedly! reapply if you wipe off! etc. Indeed, I didn't burn. But I did tan like crazy through it- I'm really annoyed and way, way darker than I like to be. Yay, freckles and sun damage . I even freckled the crud out of my left foot, which had never had freckles before! Kept trying to wash them off for a week Oh and I make my own mineral makeup powder foundation, and I didn't tan through *that*- it's primary ingredients are a physical sunblock, titanium dioxide & zinc oxide, with Z-Cote zinc added, which is a zinc that is so finely milled that it's a great SPF booster, almost totally translucent but very good sunblock. (And now my face is about five shades lighter than the rest of me, which just compounds the awesome ) So apparently the physical sunblock worked better than the chemical kind. Anyway. Anybody got any sublock recommendations? (I have no clue why I tanned this time, and last time I went to CR barely at all, with the same brand of sunblock same SPF, fresh tube both times.) Bad luck? Just can't block 100% of the sun or something? Do people who live in sunny places just... tan no matter what? Maybe some sunblock that uses a physical block like zinc/tite white, or something? And even before I'd left for CR I'd tanned some here in Seattle, through the same block (I wear it anytime I have my arms exposed in the summer). Maybe that tube was bad or something. Can that happen I wonder...?