Natural grease is a water-soluble lubricant. Works on wet or dry surfaces. Safe for potable water systems. Nontoxic, noncorrosive, nonflammable, and will not promote bacterial growth and its free from petroleum liquids, and alkali chemicals. This grease called natural grease made from pure vegetable oils and its use in pipe joining. Buyformula website will teach you the best method for making high quality natural pipe joining grease use economic raw materials. Formula is available in PDF format file, that described in technical English language.