Glycerin is an excellent substitute for propylene glycol in many formulations. Extremely sensitive individuals may have a flare-up or dermatitis after oral ingestion of foods or upon the use of oral, intramuscular, or intravenous medications containing propylene glycol.
Skin contact with propylene glycol is required for it to cause a rash. Discontinuation of exposure to products containing propylene glycol should result in improvement and/or resolution of your dermatitis. By law, all products made in the U.S. for topical use have the ingredients listed either on the product package or the box that contains it, so check the labeling of your skin care products for this ingredient. If there is not enough information ask your pharmacist or retailer, or contact the company directly. At work, request
a Safety Data Sheet (SDS) to help identify potential sources of exposure.