abstract:Prell is a viscous, pearl green shampoo and conditioner product manufactured by Ultimark Products that according to its maker "...contains a unique 'rinse clean' formula that provides a thick, rich lather for clean, healthy hair.
" Over the years the company added dozens of newproductlinessuch as Prell shampoo, Duncan Hinescake mixes, and the ever-present Tide, "new and improved" many a time.