What impurities did you remove from the soap by washing it with cold water?

The impurities that were removed include sodium hydroxide, ethanol, and the boiling stones.

 ethanol, and the boiling stones, sodium, and I think hydroxide was also one of them.

When there has been an error in copying a DNA, a DNA repair gene fixes its mistakes. However, a person having an error in his DNA repair gene (which are not corrected), it may lead to gene mutations with the possibility of leading to cancer. The mutations of DNA repair gene can possibly be inherited or acquired.