I'm allergic to iodine. What can be used to prep my skin for or?

Iodine allergy. Cleansers containing Chlorhexidine gluconate (hibiclens or betasept) can be used.
Chlorhexidine. Chlorhexidine gluconate (chg) can be used to prepare the skin before surgery. An allergy to seafood or reaction to x-ray dyes doesn't mean an iodine allergy and is not a contra-indication to iodine based pre-op skin prep solutions. Seafood allergies are due to protein in the food. Reactions to x-ray dyes are due to the electric charge on the molecules and are unrelated to iodine.