Some mascaras combine both solvent-based and water-based systems to form either a water-in-oil or oil-in-water emulsion.
(Some mascaras; combine; both solvent-based and water-based systems to form either a water-in-oil or oil-in-water emulsion)
Some mascaras
combine
both solvent-based and water-based systems to form either a water-in-oil or oil-in-water emulsion