My first real-life contact with sodium hydroxide came from soapmaking. Imagine my surprise when I saw sodium hydroxide on the label while shopping for a lotion/cream for the season yesterday. I grabbed a few more at random and scrutinized the labels, and sure enough sodium hydroxide showed up quite a bit. I didn't know they added tthat to lotions and creams! Question, what might be the function of sodium hydroxide in a lotion?