When I used the old stuff and got burned we were at the beach all day for a family reunion and I noticed that the kids were a little pink and I kept putting the sunblock on thinking I was doing the right thing, well by the time we got home the little one was blistered and when we went to the doc they told me that putting expired block on them was just like rubbinig them down with lotion over and over again. Needless to say this was one of those " am I really good enough to be a mom " moments.