We use certified organic herbs and infuse them for a year to make each extract. Most products on the market today use propylene and/or butylene extracts which are petroleum by-products that have potential health risks when used daily. We started making our Dead Sea Mineral Botanical Extracts in 2008 after learning about potential health risks with petroleum-based extracts. We keep them going year round. It’s a ‘labor of love’ that we are happy to do for our products!