What: Deionized water, also known as demineralized water, is water that has had its mineral ions removed. These ions may include cations from sodium, calcium, iron, copper, and anions such as chloride and bromide. Water is demineralized as a means of purification (Wiki).
Origin: Deionized Water is processed using specially-manufactured ion exchange resins which bind to and filter out the mineral salts from water (Wiki).
Products Found In: hair care, skincare, body care, baby care, sun care, makeup.
Alternate Names: Onsen-Sui; Aqua; Deionized Water; Distilled Water; Purified Water; Dihydrogen Oxide; Distilled Water (EWG).
Toxicity: Deionized Water is generally classified as being nontoxic or harmful.