Lotion or cream needs to cool off completely before you put the lids on. If any condensation occurs on the lid there is no preservative in it. If any drops fall on the lotion, it will contaminate it.
I use SFIC bases except SFIC Low Sweat bases. I live in the desert with no humidity, so moisture is not a problem. The low sweat sets up too fast for me and I don't care for the skin feel.