my mask and my skin

since i changed my mask body (not sure if that is the right word..) my skin gets bad where the mask "sit" on my face. i found out i have that problem with all mask except the mask bod is really old (like mine before i had to repalce it :( )
any idea what i can do?

You may be allergic to the material in the mask skirt. Many people are allergic to latex (rubber) while others are allergic to silicone. It's quite possible that the skirt of your old mask was made of a different material (one that you tolerate) from the material of that of the new mask. Good luck!