However the focus should be to determine what is causing the itch. If it is dry skin, then a good beard oil or beard balm will help to moisturise the skin and hair. When applying the oil or balm, it is a good idea to draw it upward from the bottom of the beard, against the grain. Brush it up against the grain several times before patting it back down.
Filtration is commonly the mechanical or physical operation which is used for the separation of solids from fluids (liquids or gases) by interposing a medium through which only the fluid can pass.The fluid that passes through is called the filtrate. Filtration is used to separate particles and fluid in a suspension, where the fluid can be a liquid, a gas or a supercritical fluid. 2  Depending on the application, either one or both of the components may be isolated.
  The filtrate is the liquid that is left after you filter something -- the liquid that is now missing the solid that was filtered out. For instance, if you are making â¦ drip coffee, it is the coffee beverage (the coffee grinds are called the filtrand).he stuff left  in the paper is called the residue, and the stuff which passes  through the paper is called the filtrate.   More generally, filtration is the action or process of filtering  something. + 54 others found this useful. Khaycee Morales.