Water (aqua) is primarily used as a solvent in cosmetics and personal care products to help dissolve ingredients in preparations. It also forms emulsions in which the oil and water components of the product are combined to form creams and lotions. Lastly, it helps to hydrate skin.
Skin Research and Technology, May 2015, pages 131-136
Skin Pharmacology and Applied Skin Physiology, November-December 1999, pages 344-351
All products (except Argan Oil)