Dehydration will cause your skin to be dry and flaky and itches , just like what we call winter skin, and can also cause your sips to be very dry, chapped and red from the dryness, but the way you describe your symptoms, you have something systemic going on,, like an allergy.
Operating Standards are a set of guidelines or regulations that people have to meet or exceed while in operation. It makes sure that the product that they produce is of acceptable quality for consumption by the public.
DEFINITION of 'Absolute Performance Standard'. A way of measuring an organization's progress and how effective and efficient it is at running its business. The absolute performance standard is a benchmark for quality control that is only attainable in theory. However, it is a good way to measure how well a business and its workers are doing.