DM Water (demineralized water) ek purified water hai jisme mineral ions ko ion-exchange ya reverse osmosis se nikala gaya hai. Yeh cosmetic formulations mein primary solvent aur base ke taur par use hota hai taaki ingredients dissolve ho saken aur aqueous phase ban sake. Yeh skin irritation se bachata hai aur product ka shelf life bada deta hai kyunki mineral impurities nahi hoti.