Base 5 April 2021 This is often what an alkaline substance is called but is commonly used as a term describing a nail coating that is a first layer adhering to the nail plate. Related Articles: Cracking the Code of Peeling NailsNail ConditionsAddressing Sudden Nail Staining: Causes and SolutionsGlobal Nail Education Seminars and Online ResourcesThe Real Causes of Nail Plate Yellowing