We usually think of soap as being a very mild substance that is good for the skin. But, the cleansing effect of soap is due, in part, to the fact that it is a basic substance. Some soaps can dry out the skin, or even damage skin with frequent use. When you teach your children about acids and bases and the pH scale, have them explore the pH of different soaps in your house. Test…
Cheryl TaylorAugust 19, 2014