Which brand? Not all brands are the same, and of course activity levels and complexion play a huge part. Time to break out the Vaseline intensive care and apply liberally and often.
Sorry to hear that, if you have an aloe plant it will work wonders.
I know its late but this is what I use and it works great.
I've been hiking in the deserts in the SW for the last several years and have not been burned yet using it.