I wrap my soap in saran wrap, they are air tight. Does soap need to breathe? I have some soap that turned a different color. I am not sure what to call it. And I was wondering if its because of it being wrapped or maybe Sun? When am at street fairs I try my best to stay out of the sun, sometimes that not possible. The picture is of two soaps, the white is cp and the yellow is hp, same eo - eucalyptus. The yellow one show where my square label was. :???: Any ideas would be great because I seem to be having this issue with my other soaps too.